"The Seance Spectre" is the twentieth episode of the second series of Space: 1999 (and the forty-fourth overall episode of the programme). The screenplay was written by Donald James; the director was Peter Medak. The original title was "The Mutiny". The final shooting script is dated 16 September 1976. Live-action filming took place Monday 18 October 1976 through Saturday 30 October 1976.