While most of the crew enjoys a musical recital, something sinister is taking root in Moonbase Alpha’s agricultural area. An experiment in trying to communicate on a psychic level with plant life has disastrous effects for Dan Mateo, one of the experimenters. A strange creature is spotted stalking Alpha’s corridors, accompanied by an almost supernatural display of wind and sound – and Dr. Russell thinks it’s Mateo himself in some other form. When the apparition begins killing off members of the crew, starting with the other plant-contact researchers, dealing with it becomes of prime importance (even though Alan Carter and other members of the crew don’t even believe the creature exists). But can the intruder be eliminated without killing Mateo, with whom it seems to share a psychic link?
written by Johnny Byrne
directed by Ray Austin
music by Barry Gray
additional music by Vic ElmsGuest Cast: Giancarlo Prete (Dan Mateo), Hilary Dwyer (Laura Adams), Anthony Nicholls (Dr. James Warren), Prentis Hancock (Paul Morrow), Clifton Jones (David Kano), Zienia Merton (Sandra Benes), Anton Phillips (Dr. Mathias), Nick Tate (Alan Carter)
LogBook entry by Earl Green