Trivia: Herbert Marshall, who played Bette Davis' husband, Horace Giddens, lost a leg in WWI and wore a prosthetic limb. When Horace is desperately attempting to get upstairs to get his heart medication (otherwise he will die), he briefly goes off camera and is replaced by a stunt double who attempts to crawl up the staircase.
Trivia: Alfred Hitchcock can be seen passing Robert Montgomery in front of his apartment building, as the camera pulls back.