Curtain at Eight is a 1933 American pre-Code mystery film directed by E. Mason Hopper and starring C. Aubrey Smith, Dorothy Mackaill and Paul Cavanagh.

Plot

Wylie Thornton is the star of "Isle of Romance" at the Edwin Booth Theater. He is two-timing his wife, Alma Thornton, as well as Lola Cresmer, her sister Anice Cresmer, and Doris Manning, three actresses in the play. Thornton has been nice to Geraldine, the chimpanzee, and she has a crush on the handsome man. Geraldine has figured out how to open and close her wheeled cage, numbered "7", which is in the Property Room of the theater. Mack, the property master, does not like that, or her, and mistreats the "monk". In the Property Room, Geraldine gets her hands on a .32 caliber unrifled revolver and in handling the gun, accidentally fires it.