Shadows on the Stairs (1941)
Frieda Inescort as Mrs. Stella Rosabelle Armitage
Paul Cavanagh as Joseph "Joe" Reynolds
Heather Angel as Sylvia Armitage
Bruce Lester as Hugh Bromilow
Miles Mander as Tom Armitage
Lumsden Hare as Inspector Gregg
Turhan Bey as Ram Singh
Charles Irwin as Constable
Phyllis Barry as Lucy Timson, the Maid
Mary Field as Phoebe Martia St. John Snell
Paul Renay as Choong Thi, Hindu Sailor
Mystery abounds in this London boarding house. Residents who are not who they pretend to be. Strange things going on at night. When a body is found the police are brought in to investigate one murder and discover they have a string of murders on their hands, Their suspects are keeping things from them and each other. Who done it and why? Twist ending.
The only part that was real was the scene where Sylvia Adams tells playwrite Hugh Bromilow he should write a murder mystery, the rest was the story he wrote. No murders and no strange goings on at midnight.
Found on Amazon Prime video