Fabula
S4E18 · Identity Crisis

Susanna’s Alien Senses and Collapse

Susanna Leijten’s investigation of non-human footprints near the shuttle triggers a sudden, unsettling transformation in her behavior. She insists Mendez and Brevelle are alive, her voice laced with eerie certainty, before recoiling violently from Geordi’s touch. When he attempts to restrain her, she thrashes in panic, forcing him to call for an emergency medical transport. The scene escalates from tension to outright crisis, revealing Susanna’s deteriorating mental state—whether due to alien influence or psychological fracture—and compelling Geordi to confront the urgency of her condition before it spirals further. The moment marks a turning point: her erratic behavior no longer feels like paranoia but a symptom of something far more sinister, while Geordi’s forced intervention underscores the mission’s fragility and the need for immediate action. The chase ends with Susanna’s panicked face, a visual cue of her unraveling, as the act fades to black, leaving her fate—and the crew’s—hanging in the balance.

Plot Beats

The narrative micro-steps within this event

1

Susanna claims she can feel the transformed beings, but Geordi finds nothing on his scanner. Susanna brushes him off and walks deeper into the darkness, then startles when Geordi touches her, and runs away. He catches her, and calls for help.

disagreement to panic

Who Was There

Characters present in this moment

6

Wary concern shifting to determined urgency

Geordi La Forge exits the shuttle and shows the team a torn Starfleet uniform, a clue to the vanished crew’s fate. When Susanna disappears, he follows her footprints and finds her in a disturbed state, her beacon turned off. He attempts to restrain her as she becomes increasingly erratic, ultimately calling for emergency medical transport to Sickbay. His actions are a mix of concern, determination, and growing alarm as he witnesses Susanna’s rapid deterioration.

Goals in this moment
  • To locate and restrain Susanna before she harms herself or others
  • To secure medical assistance for her, recognizing the urgency of her condition
Active beliefs
  • Susanna is succumbing to the same contagion that transformed Brevelle and the others
  • The footprints and her behavior are linked to an alien influence, not mere paranoia
Character traits
Protective and concerned Methodical and observant Determined in the face of crisis Startled by Susanna’s sudden unraveling
Follow Geordi La …'s journey
Supporting 3

Grim alertness with underlying concern

William T. Riker leads the team’s search for Susanna after she disappears, reacting grimly to the torn uniform and ordering a fan-out to locate her. Though not directly involved in the confrontation with Susanna, his authoritative presence and tactical decisions frame the urgency of the situation. His role as the mission’s leader underscores the stakes of Susanna’s unraveling and the need for a coordinated response.

Goals in this moment
  • To locate Susanna and assess her condition
  • To coordinate the team’s response to the escalating crisis
Active beliefs
  • Susanna’s behavior is a direct result of the planet’s contagion
  • The team must act swiftly to contain the situation before it spirals further
Character traits
Authoritative and decisive Grim and alert Tactically minded
Follow Susanna's journey

Uncomfortable wariness with underlying tension

Worf approaches the team, expressing discomfort and warning that they are being watched. Though not directly involved in the confrontation with Susanna, his warrior’s instincts heighten the sense of unease, reinforcing the planet’s oppressive atmosphere. His presence adds to the tension as the team grapples with the unseen threat.

Goals in this moment
  • To alert the team to the possibility of being observed
  • To contribute to the team’s defensive posture
Active beliefs
  • The planet’s environment is actively hostile and aware
  • The team’s presence has triggered an unseen response
Character traits
Wary and uncomfortable Instinctively alert to unseen threats Reinforces the team’s sense of vulnerability
Follow Data's journey

Analytical detachment with underlying alertness

Data scans the area with his tricorder, reporting no life signs as the team searches for Susanna. Though not directly involved in the confrontation, his analytical presence reinforces the team’s methodical approach to the crisis. His lack of emotional reaction contrasts with the growing tension, highlighting the severity of Susanna’s unraveling.

Goals in this moment
  • To provide sensor data to support the team’s search
  • To assess the environmental conditions for potential threats
Active beliefs
  • The lack of life signs suggests Susanna’s claims are not supported by empirical evidence
  • The contagion may be affecting Susanna in ways that defy conventional detection
Character traits
Analytical and methodical Detached but observant Reinforces the team’s procedural response
Follow Worf's journey
Anthony Brevelle

Anthony Brevelle is invoked by Susanna Leijten as part of her erratic claim that he and Mendez are still alive …

Emilita Mendez

Emilita Mendez is invoked by Susanna as part of her erratic claim that she and Brevelle are still alive. Though …

Objects Involved

Significant items in this scene

6
Torn Starfleet Uniform from Abandoned Shuttlecraft

The torn Starfleet uniform, found inside the abandoned shuttle, is a critical clue to the vanished crew’s fate. Geordi shows it to the team, and its violent tears—suggesting a brutal struggle or forced transformation—heighten the tension. The uniform’s presence reinforces the reality of the contagion and foreshadows Susanna’s potential transformation, tying her erratic behavior to the same unseen force that claimed the others.

Before: Crumpled on the shuttle floor, violently torn with …
After: Shown to the team, its condition a haunting …
Before: Crumpled on the shuttle floor, violently torn with jagged edges.
After: Shown to the team, its condition a haunting reminder of the crew’s disappearance.
Mendez's Stolen Shuttlecraft (Tarchannen Three)

The abandoned shuttlecraft serves as the starting point for the team’s investigation and the discovery of the torn Starfleet uniform. Geordi exits the shuttle to show the uniform to the team, and Susanna’s subsequent disappearance and erratic behavior unfold near its exterior. The shuttle’s derelict state and the uniform inside symbolize the vanished crew’s fate, while its proximity to the non-human footprints ties it directly to the contagion’s threat.

Before: Abandoned on Tarchannen Three’s surface, doors pried open, …
After: Remains abandoned but now tied to Susanna’s unraveling, …
Before: Abandoned on Tarchannen Three’s surface, doors pried open, interior containing the torn uniform.
After: Remains abandoned but now tied to Susanna’s unraveling, its interior a grim reminder of the crew’s disappearance.
Non-Human Footprints Near Shuttle

The non-human footprints near the shuttle are the catalyst for Susanna’s unraveling. She discovers them and becomes fixated on the idea that Mendez and Brevelle are alive, her voice taking on an eerie certainty. The footprints serve as a tangible link to the contagion, symbolizing the unseen threat and the planet’s ability to distort perception. Their presence forces the team to confront the possibility that Susanna is already succumbing to the same force that transformed the others.

Before: Embedded in the dirt beside the shuttle, irregular …
After: Discovered by Susanna, their significance amplified by her …
Before: Embedded in the dirt beside the shuttle, irregular and non-human in appearance.
After: Discovered by Susanna, their significance amplified by her erratic behavior and the team’s growing unease.
Portable Beacon

The portable beacons are used by the team to illuminate the dark surface of Tarchannen Three. Worf and Riker direct their beams across the non-human footprints, while Susanna powers off her beacon as she recoils from Geordi’s grasp. The sudden darkness amplifies the tension, casting her panicked face in shadow as the team scrambles to respond. The beacons’ light—and its absence—serve as a metaphor for the team’s struggle to see the truth in the face of the planet’s deceptions.

Before: Clutched by the team members, beams sweeping the …
After: Susanna’s beacon is turned off, plunging her into …
Before: Clutched by the team members, beams sweeping the darkness.
After: Susanna’s beacon is turned off, plunging her into shadow as she thrashes in panic.
Geordi's Portable Communicator (Handset)

Geordi’s communicator is the tool that seals Susanna’s fate in this moment. After restraining her as she thrashes in panic, he flips it open and calls for emergency medical transport to Sickbay. The device’s glow cuts through the darkness, symbolizing the team’s last resort to contain the crisis. Its use marks the turning point where Susanna’s condition is no longer deniable, and the mission’s urgency shifts from investigation to survival.

Before: Closed and attached to Geordi’s uniform.
After: Open and active, its panel glowing as it …
Before: Closed and attached to Geordi’s uniform.
After: Open and active, its panel glowing as it hails the Enterprise.
Geordi La Forge's Handheld Diagnostic Scanner (Tricorder)

Geordi La Forge’s tricorder is used to scan the area for life signs as the team searches for Susanna. When Susanna claims to sense the presence of Mendez and Brevelle, Geordi scans again but detects nothing, reinforcing the eerie disconnect between her perception and empirical reality. The tricorder’s failure to confirm her claims underscores the alien nature of the threat and the possibility that Susanna is already under its influence.

Before: Functional and in Geordi’s possession, used for initial …
After: Still functional but yields no conclusive results, reinforcing …
Before: Functional and in Geordi’s possession, used for initial scans of the area.
After: Still functional but yields no conclusive results, reinforcing the mystery of Susanna’s claims.

Location Details

Places and their significance in this event

2
Tarchannen III Outpost Landscape

The Tarchannen Three outpost landscape serves as the battleground for Susanna’s unraveling. Its perpetual twilight and desolate terrain heighten the sense of isolation, while the scattered non-human footprints and abandoned shuttlecraft reinforce the planet’s eerie hold on those who venture here. The landscape’s oppressive atmosphere mirrors Susanna’s deteriorating state, as the team’s search for her becomes a race against an unseen force. The location’s symbolic significance lies in its role as a threshold between reality and the alien contagion’s influence.

Atmosphere Oppressive, eerie, and isolating, with a sense of being watched.
Function Battleground for the team’s investigation and Susanna’s transformation.
Symbolism Represents the boundary between human perception and the alien contagion’s distortion of reality.
Access Open but fraught with unseen dangers.
Perpetual twilight casting long shadows Spindly black plants thrusting from shadowy dunes Non-human footprints embedded in the dirt Abandoned shuttlecraft as a grim landmark
Tarchannen Surface Shuttle

The Tarchannen Surface Shuttle serves as the focal point for the team’s investigation and the discovery of the torn uniform. Its derelict state and proximity to the non-human footprints tie it directly to the contagion’s threat. The shuttle’s interior offers brief shelter, while its exterior exposes the team to the planet’s whipping winds and unseen dangers. The location’s mood shifts from a potential refuge to a symbol of vulnerability as Susanna’s erratic behavior escalates, culminating in her emergency transport to Sickbay.

Atmosphere Tense and claustrophobic, with a sense of impending doom.
Function Investigation hub and symbol of the vanished crew’s fate.
Symbolism Represents the fragility of human presence on Tarchannen Three.
Access Open to the team but exposed to the planet’s dangers.
Derelict shuttlecraft hull gleaming under alien skies Interior offering brief shelter from the elements Exterior exposed to whipping winds and unseen threats Torn uniform as a grim clue inside

Organizations Involved

Institutional presence and influence

1
Starfleet

Starfleet’s influence is palpable in this event, as the team operates under its protocols and values. The discovery of the torn uniform and Susanna’s erratic behavior force the team to balance their investigative duties with the need to contain a potential contagion threat. Geordi’s call for emergency medical transport to Sickbay reflects Starfleet’s commitment to crew safety, while Riker’s tactical decisions underscore the organization’s structured response to crises. The event highlights Starfleet’s dual role as both a supportive institution and a framework for addressing the unknown.

Representation Through institutional protocol (emergency medical transport, tactical coordination) and the team’s collective action.
Power Dynamics Exercising authority over individual crew members (e.g., ordering medical evacuation) while operating under constraints (e.g., …
Impact The event underscores Starfleet’s tension between exploration and containment, as the team grapples with the …
Internal Dynamics The team’s actions reflect Starfleet’s chain of command, with Riker leading the response and Geordi …
To contain the contagion threat and ensure crew safety To investigate the vanished crew’s fate while adhering to Starfleet protocols Through Geordi’s use of the communicator to call for medical transport Via Riker’s tactical coordination and decision-making By reinforcing the team’s methodical approach to the crisis

Narrative Connections

How this event relates to others in the story

What led here 3
Causal

"The discovery of additional shuttles with no life signs prompts the away team's investigation and Susanna's erratic behavior."

Hickman’s shuttle crashes into Tarchannen Three
S4E18 · Identity Crisis
Causal

"The discovery of additional shuttles with no life signs prompts the away team's investigation and Susanna's erratic behavior."

Hickman’s shuttle crashes; abandoned wrecks discovered
S4E18 · Identity Crisis
Causal

"The discovery of additional shuttles with no life signs prompts the away team's investigation and Susanna's erratic behavior."

Hickman’s shuttle destruction triggers away team
S4E18 · Identity Crisis
What this causes 1
Causal

"Susanna's strange behavior on the planet directly leads to her being examined by Beverly in Sickbay."

Susanna’s confinement and mission pivot
S4E18 · Identity Crisis

Part of Larger Arcs

Key Dialogue

"SUSANNA: Mendez... Brevelle... they're alive. You saw the footprints? GEORDI: Yes... but they're not human... SUSANNA: They're here. Stand still... listen... and you can feel it... they're here..."
"GEORDI: Where are you going? SUSANNA: ((jerks away, then runs)) GEORDI: Susanna?! ((grabs her, she thrashes)) GEORDI: ((hits communicator)) La Forge to Enterprise, medical emergency, two to Sickbay."
"WORF: ((low)) Sir... I am certain that we are being watched."