S5E38
Tragic
Written by David Whitaker
Story by Kit Pedler
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The Wheel In Space Part 4

When the Cybermen threaten Space Wheel W 3, the Doctor must convince Controller Bennett of the danger and find a way to stop the Cybermen's plan to colonize Earth, despite Bennett's disbelief and the Cybermen's insidious infiltration.

On Space Wheel W 3, The Doctor, Jamie, and Zoe arrive to discover a crew facing a potential meteorite storm. The Doctor warns Controller Bennett of an imminent Cyberman threat, but Bennett dismisses his claims, attributing the fear to space sickness. Undeterred, the Doctor insists the Cybermen are infiltrating the Wheel, a claim initially met with skepticism. Zoe attempts to report new calculations on the meteor storm's orbital path, but Bennett dismisses her findings further fueling the Doctor's concern about his state of mind.

Meanwhile, Cybermen are smuggled onto the Wheel hidden inside a crate of Bernalium fuel rods with the help of hypnotized crew members Laleham and Vallance. They aim to sabotage the Wheel's defenses and prepare for a larger invasion force. Bill Duggan, confined to quarters, identifies a Cybermat, but his earlier warnings were ignored. Corwyn, growing concerned about Bennett's denial, secretly seeks the Doctor's aid. Vallance and Laleham deliver the Cybermen and the Bernalium, while Chang, another crewmember, discovers the Cybermen in the crate, but is quickly eliminated leaving no immediate witnesses.

The Doctor, facing resistance from Bennett and skepticism from the crew, attempts to uncover the Cybermen's plan. He learns the Cybermats have been targeting the laser gun, which requires Bernalium rods to be repaired. The discovery of the 'new' Bernalium and the recent delivery reveals the Cybermen’s infiltration method. Duggan, also under Cyberman control, sabotages the communication systems, preventing any distress calls before ultimately being killed. With the crew now aware of the tangible threat, chaos erupts. A desperate race against time begins as the Doctor, Jamie, Zoe, and Corwyn seek to stop the Cybermen from disabling the Wheel's defenses and turning it into a staging ground for an invasion of Earth. They realize they must find a way to counteract the Cybermen's mind control and prevent the impending disaster.


Events in This Episode

The narrative beats that drive the story

30
Act 1

This act establishes the immediate threat to Space Wheel W 3 and the initial resistance to recognizing it. The Doctor urgently warns Controller Bennett about the Cybermen, describing their conversion from humans to emotionless, ruthless killers, but Bennett dismisses these claims as fantastical rubbish, attributing any fear to 'space sickness.' Despite Zoe's scientific attempts to explain 'cybernetics' and later to report critical new calculations on an approaching meteorite storm, Bennett remains stubbornly in denial, further fueling the Doctor's concerns about his mental state. Meanwhile, the Cybermen execute their infiltration plan: hypnotized crew members Laleham and Vallance smuggle two Cybermen onto the Wheel hidden within a crate of Bernalium fuel rods. Crewmember Chang discovers the Cybermen in the loading bay but is quickly eliminated, leaving no immediate witnesses to their arrival. The Doctor, Jamie, and Corwyn begin to piece together clues, such as Bill Duggan's earlier sighting of a Cybermat and the Cybermats' specific targeting of the laser gun's Bernalium supply. The suspicious delivery of 'new' Bernalium from the rocket allows the Doctor to deduce the Cybermen's infiltration method. Corwyn, increasingly concerned about Bennett's deteriorating judgment, secretly seeks the Doctor's aid. The situation escalates dramatically when a system check confirms a crew member is under adverse influence. Duggan, now fully under Cyberman control, smashes the communication systems, preventing any distress calls before dying from the feedback. This act of sabotage provides undeniable proof of the Cybermen's active presence and immediate threat, forcing the crew to confront the reality. The Doctor quickly instructs the crew on how to create makeshift protection against Cyber-control signals and declares that he and Jamie will hunt the Cybermen, setting the stage for direct confrontation.