Writer:	Chris Boucher
Director:	Mary Ridge
Star:	Paul Darrow (Avon),  Steven Pacey (Del Tarrant (Seasons 3-4)),  Jan Chappell (Cally),  Josette Simon (Dayna Mellanby (Seasons 3-4)),  Peter Tuddenham (Zen),  Glynis Barber (Soolin (Season 4)),  Michael Keating (Vila)
Recurring Role:	Stuart Fell (Link - uncredited),  James Muir (Link - uncredited)
Guest Star:	Geoffrey Burridge (Dorian),  Peter Finn (Disintegrating Dorian - uncredited),  Bruno Tonioli (Dead Young Man - uncredited),  Harry Van Engel (Disintegrating Dorian - uncredited),  Albert Welch (Disintegrating Dorian - uncredited),  Rob Middleton (The Creature)

Cally does not appear, but is killed in this episode. (edit) Slave first appears in this episode. If he sounds more than a little like Zen, that's because both computers have the voice of Peter Tuddenham. (edit) Soolin's first appearance. (edit)

Tarrant: Avon's quite capable of killing you, you know.
Dorian: I never doubted it.
Dayna: Beneath that cold exterior beats a heart of pure stone. (edit) Tarrant: Better strap down tight. I haven't lifted these into orbit too often.
Dayna: How often?
Tarrant: Once.
Vila: When was that?
Tarrant: In about one minute and forty five seconds. (edit) Dayna: Don't you ever get bored with being right?
Avon: Just with the rest of you being wrong. (edit) Avon: Pass out again and I'll leave you, Tarrant.
Tarrant: I'm surprised you came back this time.
Avon: We stand a better chance as a group.
Tarrant: What? While something is eating me you can get away? (edit) Tarrant: Vila rescued me?
Avon You were injured trying to rescue Cally. He rescued you. Suddenly I am hip deep in heroes.
Tarrant: Where is Cally?
Avon: Cally is dead.
Tarrant: Are you sure?
Avon: (after a pause) Yes, I'm sure.
Dayna: He went back in.
Tarrant: You wanted to be a hero too?
Avon: We needed Orac. (edit)

This episode does not have any trivia. Add some now!

Dorian's name is an allusion to the central character in a book by Oscar Wilde, The Picture of Dorian Gray. The two Dorians do not grow old. Both have a room to get rid of their vices, and when they die, both of them age instantly. (edit)