Synopsis by Hal Erickson
The Limiter circuit implanted in the head of Gan (David Jackson) to halt his murderous impulses begins to malfunction. Now his life depends upon Professor Kayn (Julian Glover), the celebrated surgeon currently in residence at the XK72 space station. Alas, Kayn is sympathetic to the Federation, and is intent upon turning Gan's friends over to the authorities. Will Blake (Gareth Thomas) be obliged to forfeit Gan's life to save the others? "Breakdown" was first broadcast on February 20, 1978.