As the Hyperion III continues its journey, more mysterious deaths occur.
Quest roles:
Lynda Bellingham(The Inquisitor), Michael Jayston(The Valeyard), Arthur Hewlett(Kimber), Tony Scoggo(Grenville), Honor Blackman(Professor Lasky), Michael Craig(Commodore), Malcolm Tierney(Doland), Simon Slater(Edwardes), Yolande Palfrey(Janet)