Alone in the Dark

Alone in the Dark is a 1982 American slasher film co-written and directed by Jack Sholder in his directorial debut, and starring Jack Palance, Martin Landau, Donald Pleasence, Dwight Schultz, and Erland Van Lidth. The plot follows a psychiatrist's family who are besieged by four escaped mental patients during a power blackout.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.