Movie Description

The Spiral Staircase is a 1946 American psychological thriller film directed by Robert Siodmak, from a screenplay by Mel Dinelli based on Ethel Lina White's novel Some Must Watch (1933). The novel was adapted for a radio production starring Helen Hayes before reaching the screen.

Variety wrote, "This is a smooth production of an obvious, though suspenseful murder thriller, ably acted and directed. Mood and pace are well set, and story grips throughout."