S7E19
· Genesis

Riker’s de-evolution reveals crew-wide crisis

In Sickbay, Picard and Data examine the unconscious, proto-human Riker—now regressed into an Australopithecine state—after Picard administers a tranquilizer to keep him sedated. Data’s DNA analysis confirms the synthetic T-cell treatment has mutated into an intron virus, reactivating dormant genetic sequences across the crew. The revelation escalates the stakes: Riker’s transformation is not an isolated incident but part of a shipwide de-evolution crisis, with Troi’s amphibian traits and potential non-Earth crew mutations hinting at a broader pandemic. Data delivers the worst news yet: Picard is also infected, with twelve hours before his own primate regression begins. The urgency spikes as they realize the ship’s main computer is compromised, forcing them to relocate to Data’s quarters for analysis. The scene pivots from medical examination to existential threat, with Picard’s dark humor masking his dread as he and Data prepare to leave Sickbay armed and determined to find a cure before the crew loses their humanity entirely.

Plot Beats

The narrative micro-steps within this event

2

Picard finishes administering a tranquilizer to the unconscious Riker and asks Data for an update on Riker's condition.

concerned to probing

Data explains that a synthetic T-cell has invaded Riker's DNA, activating dormant introns and causing him to de-evolve into an Australopithacine, also explaining how the virus is affecting Counselor Troi and other crewmembers, causing dramatic transformations.

scientific to alarming

Who Was There

Characters present in this moment

3

Analytical and focused, with a subtle undercurrent of concern for Picard’s well-being—his usual emotional detachment is tempered by the gravity of the situation.

Data stands beside Picard at the operating table, his fingers deftly manipulating the controls as he delivers the grim analysis of Riker’s DNA and the intron virus. His explanation is precise and clinical, but his revelation that Picard is also infected is delivered with a rare hint of hesitation, as if he is acutely aware of the emotional weight of his words. He proposes relocating to his quarters for further analysis, his logic unshaken but his suggestion framed as a collaborative course of action. As they prepare to leave, Data draws his phaser, mirroring Picard’s readiness for potential threats.

Goals in this moment
  • To identify the mechanism of the intron virus and develop a countermeasure to reverse the de-evolution process.
  • To support Picard’s leadership and ensure the crew’s survival, even as the ship’s systems fail around them.
Active beliefs
  • That scientific rigor and collaboration are the keys to solving the crisis, even under extreme time constraints.
  • That his independent computer in his quarters is the most reliable tool for the micro-cellular scans needed to find a cure.
Character traits
Unwaveringly logical even in crisis Empathetic in delivery of bad news (uncharacteristically hesitant when revealing Picard’s infection) Resourceful problem-solver (suggesting his quarters’ independent computer as a solution) Collaborative and supportive of Picard’s leadership Physically prepared for action (drawing his phaser)
Follow Data's journey

Feigned calm masking deep anxiety and existential dread—his usual composure is strained by the knowledge that he, too, is infected and facing de-evolution.

Picard stands over the operating table in Sickbay, his expression a mix of clinical focus and growing unease as he administers a tranquilizer to the proto-human Riker. His dialogue with Data reveals his sharp intellect and leadership, but his reactions to the intron virus—particularly the revelation of his own infection—betray a deep, unsettling disturbance. He masks his dread with dark humor ('Well... before I begin scurrying about...'), but his urgency to act is palpable as he and Data prepare to leave Sickbay armed, phasers drawn.

Goals in this moment
  • To understand the scope and mechanism of the intron virus to find a cure before the crew loses their humanity.
  • To maintain leadership and morale despite the dire circumstances, ensuring Data and the remaining functional crew members stay focused.
Active beliefs
  • That Starfleet training and logic can overcome even the most bizarre biological threats.
  • That time is of the essence—every moment counts in preventing the crew’s irreversible de-evolution.
Character traits
Analytical under pressure Darkly humorous in crisis Protective of his crew (even in his own dire situation) Quick to adapt to existential threats Masking fear with professionalism
Follow William Riker's journey

Unconscious and thus devoid of emotional response, but his physical state evokes pity, urgency, and determination in Picard and Data.

Riker lies unconscious on the operating table, his body now regressed into an Australopithecine state. His proto-human form is sedated by Picard’s tranquilizer, his chest rising and falling in shallow breaths. He is the physical manifestation of the intron virus’s effect—a living example of the de-evolution crisis unfolding across the Enterprise. His condition serves as a ticking clock, a reminder of the urgency driving Picard and Data’s actions.

Goals in this moment
  • To be cured and restored to his human form (implied by Picard and Data’s efforts).
  • To serve as a case study for understanding the virus’s progression.
Active beliefs
  • That his first officer’s instincts will lead to a solution (implied by Picard’s protective actions).
  • That the crew will not abandon him to his fate.
Character traits
Helpless (unconscious and regressed) Symbolic of the crew’s vulnerability to the virus A catalyst for action (his transformation spurs Picard and Data to seek a cure)
Follow Deanna Troi's journey

Objects Involved

Significant items in this scene

7
Picard's Hypospray

While not explicitly used in this event, the tranquilizer hypospray Picard administers to Riker is implied to be part of Sickbay’s standard medical arsenal. Its presence in the scene—though not detailed—hints at the broader medical resources available to the crew, even as those resources prove insufficient to combat the intron virus. The tranquilizer represents a last-ditch effort to maintain control over Riker’s condition, a temporary measure in the face of a far greater threat.

Before: Stored in Sickbay’s medical supplies, likely in a …
After: Used and discarded or returned to storage, its …
Before: Stored in Sickbay’s medical supplies, likely in a locked cabinet or tray with other sedatives.
After: Used and discarded or returned to storage, its sedative properties now a fading memory as the crew’s crisis deepens.
Beverly Crusher's Hypospray

The hypospray containing the tranquilizer is used by Picard to sedate Riker, ensuring he remains unconscious during the critical analysis of his DNA. This object is a temporary solution to a larger problem—it buys time for Data to run scans and for Picard to process the horrifying implications of the intron virus. Its use underscores the crew’s desperation: even as they seek a cure, they must manage the immediate symptoms of the crisis. The hypospray is a small but vital tool in the race against de-evolution, symbolizing both their medical capabilities and their dwindling control over the situation.

Before: Fully charged and ready for use in Sickbay’s …
After: Empty or nearly empty, having been used to …
Before: Fully charged and ready for use in Sickbay’s medical supplies, likely stored in a nearby cabinet or tray.
After: Empty or nearly empty, having been used to administer the tranquilizer to Riker. It remains in Sickbay as Picard and Data depart, its purpose fulfilled for now.
Picard and Data's Phasers

Picard and Data’s phasers are drawn as they prepare to leave Sickbay, a stark visual indicator of the escalating threat level aboard the Enterprise. These weapons, typically used for defense against external enemies, now serve as a precaution against the crew themselves—who may be transforming into feral or unpredictable forms. The phasers symbolize the crew’s loss of control over their environment: what was once a tool for exploration and diplomacy has become a necessity for survival. Their humming presence as Picard and Data head for the door reinforces the urgency and danger of their mission.

Before: Holstered or stored in a secure location in …
After: Drawn and held at the ready as Picard …
Before: Holstered or stored in a secure location in Sickbay, likely near the medical staff’s workstations.
After: Drawn and held at the ready as Picard and Data exit Sickbay, their energy cells charged and safety mechanisms disengaged for potential immediate use.
Data's Isolated Diagnostic Computer (Quarters)

Though not yet physically present in this event, Data’s independent computer in his quarters is proposed as the solution to the ship’s compromised main computer. Its mention by Data marks a turning point in the scene—Picard and Data shift from diagnosis to action, recognizing that their only hope lies in relocating to a secure, isolated system. The computer symbolizes hope amid chaos: a tool untouched by the crew’s panic, capable of providing the micro-cellular scans needed to develop a cure. Its existence is a lifeline, but one that requires Picard and Data to venture into the uncertain corridors of the Enterprise to reach.

Before: Operational and untouched in Data’s quarters, its independent …
After: Now the focus of Picard and Data’s next …
Before: Operational and untouched in Data’s quarters, its independent processing unit unaffected by the shipwide computer damage.
After: Now the focus of Picard and Data’s next steps, its role as the key to reversing the de-evolution process is established. The two prepare to head there immediately.
Riker's Sickbay Operating Table

The operating table in Sickbay serves as the focal point for Data’s DNA analysis of Riker’s proto-human form. Its integrated controls allow Data to manipulate and scan Riker’s genetic structure, revealing the intrusion of the synthetic T-cell and the activation of latent introns. The table is a symbol of medical progress turned against the crew—what was once a tool for healing is now a stage for diagnosing an irreversible biological crisis. As Picard and Data stand over it, the table anchors their desperate efforts to understand the virus before it claims them all.

Before: Functional and sterile, with Riker’s unconscious body secured …
After: Still operational but now associated with the grim …
Before: Functional and sterile, with Riker’s unconscious body secured atop it. Monitors display his vital signs, and the table’s controls are ready for use.
After: Still operational but now associated with the grim revelation of the intron virus. Riker remains sedated upon it as Picard and Data depart, the table left behind as they seek answers elsewhere.
Synthetic T-Cell Treatment

The synthetic T-cell treatment, originally intended to cure Barclay’s Urodelan Flu, is the catalyst for the entire crisis. In this event, Data’s analysis confirms that this treatment has mutated into the intron virus, reactivating dormant genetic sequences across the crew. The object is no longer a cure but a curse—its transformation from healing agent to pandemic vector is the core tragedy of the scene. Picard and Data’s realization that the virus originated from this treatment underscores the unintended consequences of medical intervention and the fragility of the crew’s humanity.

Before: Administered to Barclay earlier in the episode, its …
After: Fully realized as the source of the de-evolution …
Before: Administered to Barclay earlier in the episode, its mutation into the intron virus already underway but not yet detected.
After: Fully realized as the source of the de-evolution crisis, its presence now a looming specter over the crew’s fate. The treatment’s remnants are likely still in Sickbay’s medical logs, a record of the disaster.
USS Enterprise-D Main Computer Core

The USS Enterprise’s main computer is revealed to be damaged, likely by panicked crewmembers during the early stages of the de-evolution crisis. Its failure is a critical setback—without it, Picard and Data cannot run the micro-cellular scans needed to analyze the intron virus. The computer’s compromise symbolizes the crew’s unraveling: their usual reliance on technology and institutional systems is now a liability. Data’s suggestion to use his independent computer instead highlights the fragility of their situation and the need for improvisation in the face of collapse.

Before: Functional but increasingly erratic, its precision circuits damaged …
After: Inoperable for the scans Picard and Data need, …
Before: Functional but increasingly erratic, its precision circuits damaged by crewmembers who mishandled it during the crisis.
After: Inoperable for the scans Picard and Data need, forcing them to abandon Sickbay and seek an alternative solution.

Location Details

Places and their significance in this event

2
Data's Quarters

Though not yet physically present in this event, Data’s quarters are proposed as the next critical location for Picard and Data’s investigation. The mention of the independent computer in his quarters marks a shift from diagnosis to action, offering a glimmer of hope in an otherwise dire situation. The quarters symbolize privacy and isolation—a contrast to the chaos unfolding in Sickbay and the rest of the ship. It is a place where logic and precision might still prevail, untouched by the crew’s panic. The location’s domestic details (Spot’s nesting area, Data’s personal effects) underscore the personal stakes of the crisis, even as it becomes a scientific battleground.

Atmosphere Not directly observable in this event, but implied to be calm and orderly compared to …
Function Safe haven for analysis and potential cure development, where Picard and Data can work without …
Symbolism Represents the last bastion of reason and control aboard the Enterprise, a place where Data’s …
Access Accessible only to Picard and Data, as the rest of the crew is either infected …
Data’s bed, where Spot once rested pregnant, now abandoned. A chair near the nesting spot where Spot hid as an iguana. Cat toys and string littering the floor, remnants of a normalcy that no longer exists. The independent computer terminal, humming softly and untouched by the shipwide failures.
Sick Bay (Main Facility, USS Enterprise-D)

Sickbay serves as the epicenter of the de-evolution crisis in this event, a place of healing turned into a chamber of horrors. The dim lighting casts long shadows over the operating table where Riker lies, his proto-human form a grotesque reminder of the virus’s power. The beeping monitors and sterile environment contrast sharply with the primal threat now aboard the Enterprise—the crew’s medical sanctuary is no longer safe. As Picard and Data stand over Riker, the location becomes a symbol of their desperation: they are racing against time in a place designed for care, now forced to confront the limits of their own humanity.

Atmosphere Tension-filled and oppressive, with the hum of failing equipment and the weight of unspoken dread. …
Function Diagnostic hub and temporary refuge—where Picard and Data confirm the scope of the crisis and …
Symbolism Represents the crew’s vulnerability and the failure of their usual systems to protect them. Sickbay, …
Access Restricted to essential personnel only due to the crisis, though the door is buckling under …
Dim, emergency lighting casting eerie shadows over the operating table. The rhythmic beeping of monitors tracking Riker’s vital signs, now distorted by the virus. The hum of the ship’s failing systems, interspersed with distant, animalistic cries from the corridors. The sterile scent of antiseptic mingling with the musky, primal odor of Riker’s regressed form.

Organizations Involved

Institutional presence and influence

1
USS Enterprise Crew (Synthetic T-Cell De-evolution Crisis)

The USS Enterprise crew is the collective victim of the intron virus, their bodies and minds under siege as the synthetic T-cell treatment mutates and reactivates dormant genetic sequences. In this event, the crew’s plight is embodied by Riker’s proto-human form, Troi’s implied amphibious regression, and Picard’s impending primate transformation. Their usual roles—medical staff, security, command—are rendered obsolete by the biological crisis, forcing Picard and Data to improvise solutions. The crew’s collective helplessness is a driving force in the scene, as their panic and mishandling of the ship’s systems (e.g., damaging the main computer) exacerbate the problem. Yet, their bond and shared history also serve as a unifying thread, motivating Picard and Data to find a cure before it’s too late.

Representation Through the physical manifestations of the virus (Riker’s regression, Troi’s implied transformation) and the institutional …
Power Dynamics Exercising no authority—entirely at the mercy of the virus, with Picard and Data as the …
Impact The crew’s usual institutional structures (medical protocols, chain of command, technological reliance) have collapsed, leaving …
Internal Dynamics Factional disintegration—crewmembers are either transforming, panicking, or (in the case of Worf) becoming feral threats. …
To survive the de-evolution process and retain their humanity. To trust in Picard and Data’s leadership to find a solution before the crew is lost forever. Collective panic and mishandling of ship systems (e.g., damaging the main computer). Shared history and bonds motivating Picard and Data to act on their behalf.

Narrative Connections

How this event relates to others in the story

What led here 7
Causal

"Data provides context to what is happening to Riker, which leads Data to discover that Picard is infected also."

Picard learns he faces de-evolution
S7E19 · Genesis
Causal

"Data confirming Riker’s de-evolution leads Data to discovering how the crewmembers are being affected and turning."

Riker’s proto-human transformation confirmed
S7E19 · Genesis
Causal

"Data provides context to what is happening to Riker, which leads Data to discover that Picard is infected also."

Data proposes micro-cellular scans in his quarters
S7E19 · Genesis
Causal

"Data confirming Riker’s de-evolution leads Data to discovering how the crewmembers are being affected and turning."

Riker’s proto-human rage forces Data’s stun
S7E19 · Genesis
Causal

"Data confirming Riker’s de-evolution leads Data to discovering how the crewmembers are being affected and turning."

Riker’s devolution exposed
S7E19 · Genesis
Character Continuity

"Despite his impending de-evolution, Picard’s leadership skills and resolve remain, enabling him to find a solution and act with data."

Data proposes micro-cellular scans in his quarters
S7E19 · Genesis
Character Continuity

"Despite his impending de-evolution, Picard’s leadership skills and resolve remain, enabling him to find a solution and act with data."

Picard learns he faces de-evolution
S7E19 · Genesis
What this causes 4
Causal

"Data provides context to what is happening to Riker, which leads Data to discover that Picard is infected also."

Picard learns he faces de-evolution
S7E19 · Genesis
Causal

"Data provides context to what is happening to Riker, which leads Data to discover that Picard is infected also."

Data proposes micro-cellular scans in his quarters
S7E19 · Genesis
Character Continuity

"Despite his impending de-evolution, Picard’s leadership skills and resolve remain, enabling him to find a solution and act with data."

Picard learns he faces de-evolution
S7E19 · Genesis
Character Continuity

"Despite his impending de-evolution, Picard’s leadership skills and resolve remain, enabling him to find a solution and act with data."

Data proposes micro-cellular scans in his quarters
S7E19 · Genesis

Key Dialogue

"PICARD: This tranquilizer should keep him unconscious for another seven hours. What have you found out?"
"DATA: I have analyzed Commander Riker's DNA structure. A synthetic T-cell has invaded his genetic code. This T-cell has begun to activate his latent introns."
"PICARD: So these... introns are causing her DNA to re-combine in an earlier configuration?"
"DATA: That is correct. In her case, the DNA is creating an amphibious lifeform which became extinct over fifty million years ago."
"DATA: I feel I must point out, sir, that you have become infected with the intron virus, as well."
"PICARD: How long before I start to change?"
"DATA: According to my calculations, within the next twelve hours, you will begin to exhibit the first signs of your eventual transformation."