86 mins | Thriller, Horror, Mystery | Jan. 31, 1975
86 mins | Thriller, Horror, Mystery | Jan. 31, 1975
| IMDb rating | 4.7 |
| Producers | Raven Films |
| Original title | The Spiral Staircase |
| Directors | Clive Reed, John Smallcombe, Chris Carreras, Angela Allen, Peter Collinson, Bert Batt |
| Writers | Allan Scott, Mel Dinelli, Ethel Lina White, Chris Bryant |
as Helen
as Dr. Sherman
as Steven
as Lieut. Fields
as Mrs. Sherman
as Blanche
as Nurse
as Dr. Rawley
as Mrs. Oates
as Oates
as Blind Girl
as Policeman
as Police Photographer (uncredited)