A young American woman visiting her author father in London discovers that her childhood habit of sleepwalking has recurred. She has a vivid dream of witnessing a murder in a strange house - or is it a dream?
Direction
Gibson crafts maximum dread in 66 tight minutes.
Production
Creepy manor production design on a TV budget.
Acting
Carr's sleepwalker vulnerability is genuinely unsettling.

Director
Alan Gibson
Trivia, insights & behind the scenes
Director Alan Gibson made three Hammer films in two years; this TV movie was his warm-down lap.
The 'dream murder' structure directly influenced later giallo films, though few matched its deliberate ambiguity.