S6E1 · Time's Arrow, Part II graph

Data’s decapitation and the cane’s activation

In a violent escalation, the Alien Doctor and Nurse phase into the cavern and seize the cane from Troi. As Data lunges at super-speed to intervene, the cane activates, tearing a temporal rift through his body—his head is violently severed and sent flying across the cavern floor. The force of the rift’s opening flings Guinan unconscious against a rock and disarms Clemens, whose gun and watch are knocked away. The Alien Doctor, now in possession of the cane, hesitates only briefly before plunging through the rift, followed by Riker, Geordi, Troi, and Beverly. Picard, torn between pursuing the aliens and tending to Guinan, chooses to stay, leaving him stranded in the 19th century as the rift closes. Clemens, driven by curiosity or defiance, impulsively leaps through the rift just before it vanishes, further fracturing the crew’s cohesion and leaving Picard isolated with an injured Guinan. The event marks a brutal turning point: Data’s destruction eliminates a critical ally, the cane’s activation accelerates the Devidians’ timeline manipulation, and the crew’s separation forces Picard into a desperate, solitary struggle to preserve history and save his team.

Plot Beats

The narrative micro-steps within this event

1

The Alien Doctor and Nurse phase in, snatch the cane, and activate it as Data dives to stop them, resulting in Data's apparent death as his head is torn from his body.

confrontation to chaos ['cavern']

Who Was There

Characters present in this moment

10

Torn between duty and concern for Guinan, appalled by Data's destruction, determined but resigned to isolation.

Captain Picard helplessly watches the Alien Doctor snatch the cane from Troi and activate it, creating a temporal rift that tears through Data. He commands his officers to follow the doctor through the rift, but then chooses to stay behind with the injured Guinan, becoming stranded in the 19th century as the rift closes and Clemens makes a last-second leap.

Goals in this moment
  • Ensure the away team stops the Devidians
  • Protect the injured Guinan
  • Preserve the timeline even at personal cost
Active beliefs
  • The mission must continue without him if necessary
  • Guinan's life outweighs his own freedom
  • His officers can succeed on their own
Character traits
decisive compassionate strategic risk-aware
Follow Jean-Luc Picard's journey

Focused and determined, devoid of emotion but displaying a logical imperative to stop the threat.

Data lunges at super-speed to grab the snake device from the Alien Doctor, but the device activates just as he grabs it. The resulting temporal rift tears through his android body, violently severing his head from his torso and sending his head flying across the cavern floor.

Goals in this moment
  • Prevent the Alien Doctor from using the temporal device
  • Protect the crew from harm
Active beliefs
  • Immediate intervention is necessary to stop the Devidians
  • His android body can withstand the risk
Character traits
heroic self-sacrificing swift analytical
Follow Data's journey

Cunning and urgent, focused on escape and maintaining control of the situation.

The Alien Doctor phases into the cavern, snatches the temporal cane from Troi, and activates it, creating a blinding rift. He then hesitates briefly over his wounded partner before plunging through the rift, escaping into the timestream.

Goals in this moment
  • Activate the temporal device to escape
  • Leave the cavern and continue the mission
  • Leave behind the wounded nurse if necessary
Active beliefs
  • The rift is their only escape
  • The crew is a threat that must be evaded
Character traits
aggressive ruthless decisive opportunistic
Follow Doctor's journey

Initially skeptical and confrontational, then astonished by the temporal phenomenon, and finally driven by curiosity and defiance to jump through.

Samuel Clemens, holding a Colt revolver on the crew, is thrown back by the force of the opening rift, losing both his gun and pocket watch. After the others go through, he hesitates, glances at Picard, and then impulsively leaps through the closing rift, joining the away team.

Goals in this moment
  • Witness the time travel event firsthand
  • Keep the strangers under his observation
Active beliefs
  • These people are not from his time and demand investigation
  • He must seize the opportunity to understand the truth
Character traits
curious impulsive defiant brave
Follow Samuel Clemens's journey
Supporting 6

Alert and ready, focused on the mission despite the chaos.

Commander Riker is present in the cavern, having been scanning with Geordi. When the rift opens, he immediately follows Picard's order and goes through the rift with the others, continuing the pursuit of the Devidians.

Goals in this moment
  • Pursue the Alien Doctor through the rift
  • Support the crew in stopping the Devidian threat
Active beliefs
  • Picard's command is sound
  • The team must stay together to succeed
Character traits
obedient decisive action-oriented
Follow William Riker's journey

Alarmed by the sudden violence but maintaining clinical calm and focus on the mission.

Dr. Crusher stands among the away team in the cavern. When the temporal rift opens, she follows Picard's order without hesitation, passing through the rift to pursue the Alien Doctor alongside Riker, Geordi, and Troi.

Goals in this moment
  • Pursue the Alien Doctor through the rift
  • Aid in stopping the Devidian threat
Active beliefs
  • Immediate action is required to counter the Devidians
  • Her medical expertise may be needed forward
Character traits
obedient professional composed under pressure
Follow Beverly Crusher's journey

Surprised and momentarily vulnerable, then resolute as she obeys orders.

Counselor Troi is standing in the cavern when the Alien Doctor phases in and snatches the cane from her grasp. She reacts with shock but quickly recovers and, at Picard's command, proceeds through the temporal rift with the others.

Goals in this moment
  • Follow Picard's order to go through the rift
  • Support the team in stopping the Devidians
Active beliefs
  • The threat must be neutralized
  • Her empathic abilities could be useful
Character traits
reactive adaptive cooperative
Follow Deanna Troi's journey

Shocked by Data's destruction but quickly refocuses on the mission.

Geordi La Forge is present in the cavern, having been analyzing the crystalline walls with his VISOR. When the rift opens, he follows Picard's order and goes through the rift with the others, continuing the pursuit.

Goals in this moment
  • Pursue the Alien Doctor through the rift
  • Use his technical expertise to aid the team
Active beliefs
  • The mission must proceed despite the loss
  • His VISOR may help track the Devidians
Character traits
obedient analytical focused
Follow Geordi La …'s journey

Presumably pained and desperate, but not shown.

The Devidian Nurse phases in with the Doctor, but is wounded during the chaos. She lies on the ground as the Doctor escapes through the rift, left behind without aid.

Goals in this moment
  • Survive the encounter
Active beliefs
  • The Doctor will return for her
Character traits
vulnerable abandoned
Follow N.D. Nurse's journey

Initially alert, then unconscious.

Guinan is present but is thrown backwards by the force of the opening temporal rift. She strikes her head on a rock outcropping and falls unconscious, unable to participate further and becoming the reason Picard decides to stay behind.

Character traits
vulnerable in this moment previously perceptive
Follow Guinan's journey

Objects Involved

Significant items in this scene

6
Data's Severed Head

Data’s severed head lies on the cavern floor after the rift tears his body apart. Though his eyes dim, his android systems retain the potential for reactivation. Picard later lifts the head and probes its internals with a rusty nail, attempting to restore functionality. The head’s presence is a haunting reminder of Data’s sacrifice and the irreversible damage done to him. It also serves as a narrative device, offering a glimmer of hope amid the chaos—Geordi later reactivates it in the medical lab, where it delivers fragmented warnings and Picard’s binary message.

Before: Attached to Data’s body, fully functional and integrated.
After: Severed and lying on the cavern floor, dim …
Before: Attached to Data’s body, fully functional and integrated.
After: Severed and lying on the cavern floor, dim but potentially reactivatable. The head becomes a symbol of Data’s sacrifice and a critical piece of the crew’s efforts to restore him.
Clemens' Colt Forty-Five

Clemens’ Colt Forty-Five is a symbol of his defiance and skepticism, held tightly in his hand as he threatens the crew. The force of the rift’s activation flings him backward, knocking the gun from his grasp. The Colt Forty-Five skitters across the cavern floor, rendered useless in the chaos. Its loss underscores Clemens’ vulnerability and the sudden shift in power dynamics, leaving him unarmed and impulsively leaping through the rift as it closes.

Before: Held by Clemens, loaded and ready to fire. …
After: Knocked from Clemens’ hand by the force of …
Before: Held by Clemens, loaded and ready to fire. The Colt Forty-Five is a 19th-century firearm, a symbol of Clemens’ defiance and his skepticism toward the crew’s claims of time travel.
After: Knocked from Clemens’ hand by the force of the rift, lying useless on the cavern floor. Its loss leaves Clemens unarmed and forces him to act impulsively, leaping through the rift as it closes.
Devidian Temporal Rift Cane

The Alien Doctor’s cane, carved with a serpent’s head, is the catalyst for the rift’s activation. Initially held by Deanna Troi, it is seized by the Alien Doctor, who activates it with a swift motion. The cane’s activation tears open a blinding temporal rift, violently severing Data’s body and flinging his head across the cavern floor. The force of the rift’s opening also wounds the Alien Nurse and disarms Clemens, whose Colt Forty-Five and watch are knocked away. The cane’s role in this event is pivotal—it is the Devidians’ tool of escape and the instrument of Data’s destruction, marking a brutal turning point in the narrative.

Before: Held by Deanna Troi, intact and inactive. The …
After: In the possession of the Alien Doctor, who …
Before: Held by Deanna Troi, intact and inactive. The serpent-headed cane is a distinctive and dangerous object, capable of opening temporal rifts when activated by the Devidians.
After: In the possession of the Alien Doctor, who uses it to phase through the rift. The cane’s activation results in Data’s destruction and the separation of the crew, leaving Picard stranded in the 19th century.
Samuel Clemens' Watch

Clemens’ watch is a symbol of his connection to the 19th century and his sense of time. He checks it repeatedly, eyes flicking to its face to gauge the time before the rift tears open. The blast hurls it across the cavern floor with his pistol, scattering his possessions in the violence. The watch’s loss is a narrative detail that underscores the chaos of the moment and Clemens’ sudden disorientation, leaving him without his anchor to the familiar world.

Before: Held by Clemens, a compact metallic timepiece appropriate …
After: Knocked from Clemens’ hand by the force of …
Before: Held by Clemens, a compact metallic timepiece appropriate for 1893. The watch is a symbol of his humanity and his place in the 19th century.
After: Knocked from Clemens’ hand by the force of the rift, lying on the cavern floor. Its loss leaves Clemens without his temporal anchor, contributing to his impulsive decision to leap through the rift.
Temporal Rift in the Polarized Crystalline Cavern

The temporal rift is a violent, blinding hole of white light that tears open in the cavern floor after the Alien Doctor activates the serpent-headed cane. The rift’s force is catastrophic—it severs Data’s body, flings Guinan unconscious against a rock outcropping, and disarms Clemens, sending his Colt Forty-Five and watch flying. The rift serves as the Devidians’ escape route, allowing them to phase through and evade the crew. For Picard, the rift’s closure strands him in the 19th century, separating him from his crew and forcing him into a desperate, solitary struggle to preserve history and save his team.

Before: Nonexistent—the rift is a result of the cane’s …
After: Closed, leaving Picard stranded in the 19th century. …
Before: Nonexistent—the rift is a result of the cane’s activation, a sudden and violent disruption of space-time.
After: Closed, leaving Picard stranded in the 19th century. The rift’s closure marks a narrative turning point, fracturing the crew and setting the stage for Picard’s solitary mission.
Time Rift Cavern Outcropping

The jagged rock outcropping in the cavern serves as a brutal and unintended obstacle during the rift’s activation. As the temporal rupture tears open, the force of the blast flings Guinan backward, and she strikes her head against the outcropping, knocking her unconscious. The rock’s presence is a stark reminder of the cavern’s natural dangers, contrasting with the high-tech violence of the rift. Guinan’s injury is a direct result of her collision with the outcropping, forcing Picard to stay behind and tend to her, further complicating the crew’s already fractured mission.

Before: A fixed, jagged feature of the cavern wall, …
After: The site of Guinan’s injury, where she strikes …
Before: A fixed, jagged feature of the cavern wall, part of the natural environment.
After: The site of Guinan’s injury, where she strikes her head and collapses unconscious. The outcropping’s role in the event is passive but pivotal, serving as the catalyst for Picard’s decision to stay behind.

Location Details

Places and their significance in this event

1
Devidia II Surface (42°7'N, 88°0'E)

The Devidian cavern is a dimly lit, underground space with polarized crystalline walls that focus space-time distortions into a temporal lens. The crew gathers here to analyze the crystalline fractures and triolic levels, attempting to understand the Devidians’ technology and devise a plan to stop them. The cavern’s role in this event is pivotal—it is the site of the Devidians’ phase-in, the activation of the serpent-headed cane, and the violent opening of the temporal rift. The force of the rift’s activation flings Guinan unconscious against a rock outcropping, disarms Clemens, and severs Data’s body, marking a brutal turning point in the narrative. The cavern’s polarized crystals and jagged rock formations contribute to the chaos, making it a battleground where high-tech violence collides with natural danger.

Atmosphere Tension-filled and chaotic, with a mix of high-tech violence and natural danger. The cavern’s polarized …
Function Battleground and site of temporal disruption.
Symbolism Represents the collision of advanced technology (the Devidians’ temporal manipulation) with the raw, unyielding forces …
Access Open to the crew and Devidians, but the rift’s activation restricts movement and separates the …
Dim lighting casting eerie shadows on the crystalline walls. The hum of polarized energy from the cavern’s crystals. Jagged rock outcroppings that serve as both obstacles and weapons in the chaos. The blinding white light of the temporal rift, disrupting the cavern’s natural atmosphere.

Organizations Involved

Institutional presence and influence

3
Starfleet

Starfleet’s protocols and principles guide the actions of the USS Enterprise crew during this event. The crew’s use of tricorders, VISORs, and phasers is rooted in Starfleet’s commitment to exploration, diplomacy, and the protection of the timeline. However, the Devidians’ predatory actions and the sudden violence of the rift’s activation force the crew to adapt their approach, prioritizing survival and the mission over institutional protocol. The event highlights the tension between Starfleet’s ideals and the harsh realities of temporal warfare, as the crew is forced to make difficult choices in the heat of the moment.

Representation Through the crew’s adherence to Starfleet protocols (e.g., using tricorders to scan for triolic levels, …
Power Dynamics Starfleet’s influence is initially strong, as the crew relies on their training and technology to …
Impact The event underscores the challenges of Starfleet’s mission—balancing the need to stop temporal threats with …
Internal Dynamics The crew’s unity is tested as they are forced to split up, with Picard and …
Stop the Devidians from escaping and causing further temporal disruption, in line with Starfleet’s mission to protect the timeline. Ensure the crew’s safety and well-being, even in the face of overwhelming odds, reflecting Starfleet’s core values. Leveraging advanced technology (tricorders, VISORs, phasers) to analyze the Devidians’ activity and respond to threats. Acting decisively in moments of crisis, even when separated from command (e.g., Riker, Geordi, Troi, and Beverly pursuing the Devidians through the rift). Prioritizing the mission and crew safety, even at personal cost (e.g., Picard staying behind with Guinan).
Devidians

The USS Enterprise away team is led by Captain Picard in their covert operations in the Devidian cavern. Their mission is to gather data, analyze the crystalline fractures, and devise a plan to stop the Devidians from harvesting neural energy. However, the sudden phase-in of the Devidians and the activation of the serpent-headed cane disrupt their plans, leading to Data’s destruction and the fracturing of the crew. The team’s unity is tested as Riker, Geordi, Troi, and Beverly pursue the Devidians through the rift, while Picard is forced to stay behind with the injured Guinan. The away team’s actions are driven by their Starfleet training and loyalty to the mission, but the chaos of the moment forces them into a fragmented and desperate pursuit.

Representation Through the collective action of its members (Riker, Geordi, Troi, Beverly, and Picard), who act …
Power Dynamics Initially, the away team holds the upper hand, using their tricorders and VISORs to analyze …
Impact The fracturing of the away team highlights the institutional challenges of Starfleet’s mission—balancing the need …
Internal Dynamics The crew’s unity is tested as they are forced to split up, with Picard and …
Stop the Devidians from escaping through the rift and causing further temporal disruption. Preserve the timeline and ensure the crew’s safety, even in the face of overwhelming odds. Leveraging advanced technology (tricorders, VISORs) to analyze the cavern and Devidian activity. Acting decisively in moments of crisis, even when separated from command (e.g., Riker, Geordi, Troi, and Beverly pursuing the Devidians through the rift). Prioritizing the mission and crew safety, even at personal cost (e.g., Picard staying behind with Guinan).
USS Enterprise Away Team (19th-Century San Francisco Mission)

The USS Enterprise away team is a microcosm of Starfleet’s institutional values and operational principles. Led by Captain Picard, the team’s actions in the Devidian cavern are guided by their training, loyalty to the mission, and commitment to protecting the timeline. However, the sudden phase-in of the Devidians and the activation of the serpent-headed cane disrupt their plans, leading to Data’s destruction and the fracturing of the crew. The team’s unity is tested as Riker, Geordi, Troi, and Beverly pursue the Devidians through the rift, while Picard is forced to stay behind with the injured Guinan. The away team’s actions are driven by their Starfleet training and loyalty to the mission, but the chaos of the moment forces them into a fragmented and desperate pursuit.

Representation Through the collective action of its members (Riker, Geordi, Troi, Beverly, and Picard), who act …
Power Dynamics Initially, the away team holds the upper hand, using their tricorders and VISORs to analyze …
Impact The fracturing of the away team highlights the institutional challenges of Starfleet’s mission—balancing the need …
Internal Dynamics The crew’s unity is tested as they are forced to split up, with Picard and …
Stop the Devidians from escaping through the rift and causing further temporal disruption. Preserve the timeline and ensure the crew’s safety, even in the face of overwhelming odds. Leveraging advanced technology (tricorders, VISORs) to analyze the cavern and Devidian activity. Acting decisively in moments of crisis, even when separated from command (e.g., Riker, Geordi, Troi, and Beverly pursuing the Devidians through the rift). Prioritizing the mission and crew safety, even at personal cost (e.g., Picard staying behind with Guinan).

Narrative Connections

How this event relates to others in the story

Within this episode

What led here 1

"Clemens confronts the crew as aliens enter, which results in Data's apparent death."

Clemens forces standoff at gunpoint
S6E1 · Time's Arrow, Part II
What this causes 2

"Chase through time, which results in Clements transported to the future."

Clemens Confronts Future Reality
S6E1 · Time's Arrow, Part II

"Data's head torn, which causes the chase through time."

Time rift divides the crew violently
S6E1 · Time's Arrow, Part II

Themes This Exemplifies

Thematic resonance and meaning

Key Dialogue

"CLEMENS: "An event I would most certainly enjoy witnessing...""
"CLEMENS: "Move along... I suspect even time travellers are vulnerable to a Colt Forty-Five.""
"PICARD: "Follow him!""