Secret Beyond the Door...

Celia Lamphere (Joan Bennett), a beautiful heiress, marries Mark Lamphere (Michael Redgrave) after a whirlwind romance in Mexico, despite barely knowing him. She arrives at his New York home, Blade's Creek, and discovers a series of macabre rooms recreating infamous murder scenes, which seems to fuel her husband's obsession. As Celia tries to unravel the truth behind Mark's fixation on these rooms, she uncovers dark secrets about his past and his own mental state, leading her to suspect that he may intend to harm her.