Blake's 7Avon and Dayna are interrogated by the Federation officers, who are under the command of Del Tarrant. Avon, using the pseudonym Chevron, fakes an attempt to draw a concealed weapon and is knocked out by Tarrant. Dayna attacks with the same end result, and both are locked into a cabin. As soon as they manage to get out again, Avon contacts Zen and learns that the ship is en route to pick up Vila, who has been marooned on a jungle planet where a primitive faction and a race of advanced humans fight each other for any new arrivals on the planet. After that, Avon and Dayna discover that someone is killing off the Federation troops one by one. Avon sets out to learn who, while Dayna stays behind armed but is captured. Avon discovers that Tarrant is not a Federation Captain, but an outlaw who had been wanting to join Blake and his crew and had to disguise himself as a Federation officer. He and Tarrant overpower the other Federation troops and rescue Dayna, as Vila and Cally, who has also arrived on that planet, are about to be killed.

written by Terry Nation
directed by David Maloney
music by Dudley Simpson

Cast: Paul Darrow (Avon), Jan Chappell (Cally), Michael Keating (Vila), Jacqueline Pearce (Servalan), Steven Pacey (Tarrant), Josette Simon (Dayna), Peter Tuddenham (Zen), Michael Sheard (Clegg), Doyne Byrd (Harmon), John Hollis (Lom), Michael Crane (Mall), Primi Townsend (Zee), Julia Vidler (Barr), Catherine Chase (Nurse), Helen Blatch (Receptionist)

LogBook entry by Earl Green