Blake's 7: City at the Edge of the World

"The Harvest of Kairos" is the sixth episode of series three of the British science fiction television series Blake's 7. It was directed by Pennant Roberts with a script written by Terry Nation. It first aired on Monday, February 11th, 1980 on BBC One. In this episode, Roj Blake is part of a prisoner convoy on the shuttlecraft London en route to a Federation penal colony at Cygnus Alpha. He meet another prisoner named Kerr Avon, and the two formulate a plan to escape.