S4E18
· Identity Crisis Flashback

Tarchannen Outpost’s Vanished Crew Revealed

The recovered five-year-old recording from Tarchannen Three’s abandoned outpost introduces Lieutenant Susanna Leijten and a younger Geordi La Forge as they investigate the disappearance of the outpost’s crew. The footage opens with Ensign Brevelle’s voice establishing the mission’s context—Stardate 40164.7—before panning to Susanna, who confirms the recording is active. Geordi, holding a Tricorder, reports no signs of struggle in the outpost’s buildings, suggesting the crew vanished without resistance. The tension escalates when Ensign Hickman discovers a torn Starfleet uniform with no footprints or vehicle tracks, implying a violent or covert abduction. Susanna’s abrupt command to ‘freeze visual’ cuts the recording short, leaving the discovery unresolved but foreshadowing the alien contagion’s origin. The scene establishes a harrowing parallel to Geordi’s current transformation, framing the outpost’s fate as a critical clue in unraveling the mystery. The eerie, desolate landscape of Tarchannen Three—rendered in perpetual twilight—serves as a visual metaphor for the crew’s disappearance and the looming threat to Geordi’s life.

Plot Beats

The narrative micro-steps within this event

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An old recording from Tarchannen Three introduces Lieutenant Susanna Leijten and Geordi La Forge investigating a vanished outpost five years prior to the current events.

inquisitiveness to bafflement ['Tarchannen Three Investigation', 'futuristic structure']

Who Was There

Characters present in this moment

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Calm and composed on the surface, but the recording’s eventual context (his disappearance) suggests an underlying unease or foreboding that isn’t yet visible in his demeanor.

Ensign Anthony Brevelle’s voice is heard off-screen, establishing the mission’s context with professional precision. He confirms the recording device is active, providing the temporal and logistical framework for the investigation. His voice remains steady and detached, serving as the objective recorder of events, though his eventual fate—transformation and disappearance—casts a shadow over his current composure.

Goals in this moment
  • Accurately document the investigation for Starfleet records.
  • Support Lieutenant Leijten’s command by ensuring the recording captures all relevant details.
Active beliefs
  • The crew’s disappearance can be explained through logical investigation.
  • His role as recorder is critical to uncovering the truth.
Character traits
Professional Methodical Detached (masking underlying tension) Loyal to duty
Follow Anthony Brevelle's journey

Confused and slightly unnerved by the lack of evidence. His bafflement suggests a deep-seated discomfort with the unexplained, a trait that will later define his struggle with his own transformation.

Geordi La Forge, younger and wearing an earlier version of his VISOR, moves into view holding a tricorder. His bafflement is palpable as he reports no signs of struggle in the outpost’s buildings, his voice tinged with confusion and a hint of frustration. The eerie absence of evidence contrasts sharply with the expected chaos of a disappearance, leaving him—and the viewer—unsettled. His presence here foreshadows his own transformation in the present, creating a haunting parallel.

Goals in this moment
  • Find tangible evidence to explain the crew’s disappearance.
  • Support Susanna Leijten’s investigation with his technical expertise.
Active beliefs
  • There must be a logical explanation for the disappearance, even if it isn’t immediately apparent.
  • His tricorder scans will reveal the truth if he is thorough enough.
Character traits
Analytical Baffled Frustrated (by the lack of answers) Loyal to the team Observant
Follow Geordi La …'s journey

Tense and uneasy, his voice betraying a growing sense of dread. The discovery of the uniform challenges his attempt to rationalize the situation, leaving him unsettled and aware that something is deeply wrong.

Ensign Paul Hickman is seen in the distance holding a palm beacon, his voice tense as he calls Lieutenant Leijten to examine his discovery. He lifts the torn Starfleet uniform into view, noting the absence of footprints or vehicle tracks. His observation—‘The wind probably erased them’—hints at a attempt to rationalize the irrational, but the uniform’s presence suggests something far more sinister. His role in the discovery is pivotal, as it marks the first concrete clue to the crew’s fate.

Goals in this moment
  • Provide Lieutenant Leijten with critical evidence to aid the investigation.
  • Understand what happened to the crew, even if the answers are unsettling.
Active beliefs
  • The crew’s disappearance is the result of an external force, possibly alien.
  • His observations and discoveries are vital to solving the mystery.
Character traits
Tense Observant Rational (attempting to explain the unexplained) Loyal to the team Methodical
Follow Hickman's journey

Focused and in control, but the discovery of the torn uniform and the absence of struggle betray a growing unease. Her command to freeze the visual suggests a moment of realization—this is not a typical disappearance, and the stakes are higher than anticipated.

Lieutenant Susanna Leijten stands as the commanding presence in the recording, her dynamic and striking demeanor immediately asserting authority. She confirms the recording device is active, then moves with purpose as the investigation unfolds. Her sharp focus shifts to the torn Starfleet uniform, and her abrupt command to ‘freeze visual’ halts the recording, leaving the discovery unresolved but charged with implication. Her leadership is both decisive and haunted by the mystery unfolding around her.

Goals in this moment
  • Uncover the truth behind the crew’s disappearance to ensure the safety of her team.
  • Maintain professionalism and leadership in the face of the unknown.
Active beliefs
  • The crew’s disappearance is not accidental but the result of a deliberate, possibly alien, force.
  • Her team’s safety is her top priority, and she must act swiftly to prevent further harm.
Character traits
Authoritative Decisive Observant Haunted by the unknown Protective of her team
Follow Susanna's journey
Supporting 1

Quietly focused, her presence adds to the sense of a team united in purpose. While she does not exhibit overt emotion, her participation in the search reflects a shared determination to uncover the truth.

Ensign Emilita Mendez is present in the background, holding a palm beacon and contributing to the search effort. Though she does not speak or act directly in this segment, her presence is part of the collective team dynamic. Her silent participation underscores the unity of the away team, even as the mystery deepens around them. Her role here is supportive, adding to the atmosphere of a team working together against an unknown threat.

Goals in this moment
  • Assist in the investigation by scanning the area with her palm beacon.
  • Support her teammates in any way necessary to ensure their safety.
Active beliefs
  • The team’s collective efforts will lead to the discovery of what happened to the crew.
  • Her role, though small, is an important part of the larger investigation.
Character traits
Supportive Observant Unassuming Loyal to the team Professional
Follow Emilita Mendez's journey

Objects Involved

Significant items in this scene

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Brevelle's Recording Device

The recording device is the narrative vessel for this event, capturing the investigation in real-time. Ensign Brevelle’s voice establishes the mission’s context—Stardate 40164.7—while the device pans to include Lieutenant Leijten and the desolate landscape of Tarchannen Three. It records Geordi’s baffled report of the outpost’s pristine condition, Hickman’s discovery of the torn uniform, and Susanna’s abrupt command to freeze the visual. The device’s recovery five years later makes this footage a critical clue, linking the past disappearance to Geordi’s present transformation. Its role is dual: as an investigative tool and as a haunting artifact that preserves the mystery for future viewers.

Before: Active and recording, held by Ensign Brevelle, capturing …
After: Recovered five years later, replayed on the Enterprise …
Before: Active and recording, held by Ensign Brevelle, capturing the investigation in real-time.
After: Recovered five years later, replayed on the Enterprise as evidence of the Tarchannen Three disappearance and the alien contagion’s origin.
Hickman and Mendez's Palm Beacons

The palm beacons held by Hickman and Mendez serve as both practical tools and symbolic extensions of the team’s search efforts. Their beams cut through the perpetual twilight of Tarchannen Three, illuminating the barren ground and guiding the investigation toward the torn uniform. The beacons’ light is a metaphor for the team’s determination to uncover the truth, even as the darkness of the unknown presses in. Their presence underscores the team’s unity and the methodical nature of their search, contrasting with the chaos of the disappearance they are trying to solve.

Before: Active in the hands of Hickman and Mendez, …
After: Continue to be used as the team moves …
Before: Active in the hands of Hickman and Mendez, scanning the desolate landscape for clues.
After: Continue to be used as the team moves toward the uniform, their beams now focused on the critical discovery.
Geordi La Forge's Handheld Diagnostic Scanner (Tricorder)

Geordi La Forge’s tricorder is the primary investigative tool in this scene, sweeping over the outpost’s buildings to detect signs of struggle or conflict. Its readings confirm the absence of phaser burns, scorch marks, or any indication of a fight, reinforcing the eerie notion that the crew vanished without resistance. The tricorder’s role is to provide empirical data, but its findings—lacking any explanation—only deepen the mystery. Geordi’s frustration with the tricorder’s inability to uncover answers foreshadows his later struggle with his own transformation, where logic and technology fail to provide solutions.

Before: Functioning and in Geordi’s possession, actively scanning the …
After: Continues to be used in the investigation, but …
Before: Functioning and in Geordi’s possession, actively scanning the outpost’s buildings for evidence.
After: Continues to be used in the investigation, but its readings remain inconclusive, adding to the growing sense of unease.
Stardate 40164.7 Visual Overlay

The stardate counter superimposed on the recording serves as a temporal anchor, marking the investigation as occurring on Stardate 40164.7. It provides chronological context, linking the past event to the present-day mystery aboard the Enterprise. The counter’s ticking underscores the passage of time and the urgency of the investigation, while its presence in the recovered footage reinforces the idea that this recording is a critical artifact. The stardate becomes a haunting reminder of the five years that have passed since the disappearance, and the looming threat to Geordi’s life.

Before: Active and displayed on the recording, marking the …
After: Preserved in the recovered footage, serving as a …
Before: Active and displayed on the recording, marking the mission’s start time.
After: Preserved in the recovered footage, serving as a timestamp for the events captured and a link to the present.
Tarchannen Outpost's Torn Starfleet Uniform

The torn Starfleet uniform is the pivotal clue in this event, discovered by Ensign Hickman in the desolate landscape. Its presence—ripped and devoid of footprints or vehicle tracks—implies a violent or covert abduction, contradicting the outpost’s otherwise pristine condition. The uniform’s fabric tears suggest struggle, while the lack of surrounding evidence hints at an alien or unknown force. Susanna’s command to freeze the visual underscores its significance, as the uniform becomes the first tangible link to the crew’s fate. Its recovery in the recording serves as a harbinger of the alien contagion’s power and the danger facing Geordi in the present.

Before: Buried in the desolate landscape of Tarchannen Three, …
After: Lifted into view by Hickman, frozen in the …
Before: Buried in the desolate landscape of Tarchannen Three, undiscovered until Hickman’s scan with the palm beacon.
After: Lifted into view by Hickman, frozen in the recording as a critical piece of evidence. Later analyzed by Data, revealing alien skin cells and an unidentified footprint.

Location Details

Places and their significance in this event

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Tarchannen III Outpost Landscape

The desolate landscape of Tarchannen Three serves as the haunting backdrop for this investigation, its perpetual twilight casting long shadows over the spindly black plants and shadowy dunes. The barren expanse amplifies the mystery of the crew’s disappearance, as the lack of footprints or vehicle tracks suggests an unnatural force at work. The landscape’s eerie stillness mirrors the alien contagion’s stealth, creating an atmosphere of dread and foreboding. It is both a physical space and a metaphor for the unknown, reflecting the team’s growing unease and the looming threat to Geordi’s life.

Atmosphere Oppressive and eerie, with a sense of impending doom. The perpetual twilight creates a mood …
Function Investigation site and metaphorical embodiment of the unknown. The team’s search for clues is set …
Symbolism Represents the crew’s disappearance and the alien contagion’s power to erase all traces of its …
Access Open to the away team but restricted by the planet’s hostile environment and the unknown …
Perpetual twilight casting long, eerie shadows. Spindly black plants thrusting from shadowy dunes. Barren ground devoid of footprints or vehicle tracks. A sense of stillness and silence, broken only by the team’s voices and the hum of their equipment.
Tarchannen Outpost Buildings Four and Five

The abandoned outpost buildings—specifically Buildings Four and Five—serve as the focal point of Geordi’s tricorder scans. Their pristine condition, lacking phaser burns or signs of struggle, contrasts sharply with the torn uniform’s discovery, creating a narrative tension. The buildings’ silent facades amplify the unnatural quiet of the outpost, as if the crew simply vanished mid-task. Geordi’s methodical scanning of these structures underscores the team’s frustration, as the buildings offer no answers, only more questions. The outpost’s eerie stillness becomes a character in itself, reflecting the alien contagion’s ability to erase all traces of its victims.

Atmosphere Unnaturally quiet and still, with an air of abandonment. The lack of signs of struggle …
Function Primary investigation site for Geordi’s tricorder scans. The buildings’ condition—or lack thereof—is critical to understanding …
Symbolism Symbolizes the crew’s inexplicable vanishing and the contagion’s power to leave no physical evidence behind. …
Access Accessible to the away team, but the buildings’ eerie stillness and lack of clues create …
Squat, dimly lit structures bathed in perpetual twilight. Clean surfaces with no phaser burns, scorch marks, or blood trails. Silent facades that amplify the unnatural quiet of the outpost. Geordi’s footsteps crunching on barren ground outside, tricorder chirps piercing the void.

Organizations Involved

Institutional presence and influence

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Starfleet

Starfleet is the institutional backbone of this investigation, represented through the away team’s uniforms, protocols, and the recording device itself. The team’s actions—scanning with tricorders, documenting findings, and following Susanna’s commands—reflect Starfleet’s methodical approach to exploration and crisis response. The discovery of the torn uniform and the absence of evidence challenge Starfleet’s assumptions about planetary investigations, hinting at a threat beyond its usual scope. The organization’s protocols are followed to the letter, but the mystery of Tarchannen Three exposes the limits of even Starfleet’s resources when faced with the unknown.

Representation Through the away team’s actions, adherence to protocol, and the recording device as a Starfleet-issued …
Power Dynamics Exercising authority over the investigation through Susanna’s leadership and the team’s training, but operating under …
Impact The discovery of the torn uniform and the lack of evidence challenge Starfleet’s understanding of …
Internal Dynamics The team’s unity and adherence to protocol mask underlying tensions, as the mystery of Tarchannen …
Uncover the truth behind the crew’s disappearance to ensure the safety of future Starfleet personnel. Document the investigation thoroughly for Starfleet records, even in the face of the unknown. Through institutional protocols (e.g., recording procedures, tricorder scans, hails for missing personnel). Via the authority of Susanna Leijten as the mission commander, ensuring the team’s actions align with Starfleet’s standards. By providing resources (e.g., recording devices, tricorders, palm beacons) that enable the investigation.

Narrative Connections

How this event relates to others in the story

What this causes 1
Callback

"The torn Starfleet uniform found in the initial recording is later analyzed by Data, Susanna, and Geordi, driving the plot forward."

Alien evidence confirms extraterrestrial threat
S4E18 · Identity Crisis

Part of Larger Arcs

Key Dialogue

"BREVELLE: ((O.S.)) Tarchannen Three Investigation. Stardate 40164.7. Ensign Anthony Brevelle Recording. Lieutenant Susanna Leijten in command."
"GEORDI: ((baffled)) I've checked buildings Four and Five... they're like all the others... no phaser hits, no sign of a fight. Looks like the entire outpost just... vanished..."
"HICKMAN: No footprints... no vehicle tracks. The wind probably erased them... but look..."
"SUSANNA: ((O.S.)) Freeze visual."