Wikipedia
Psirens
"Psirens" is the first episode of science fiction sit-com Red Dwarf Series VI and the 31st in the series run. It was first broadcast on the British television channel BBC2 on 7 October 1993. Written by Rob Grant & Doug Naylor and directed by Andy de Emmony. The episode - which involves Psirens who try to lure the crew to them to feast on their brains - had its script published before the episode was broadcast.