A third murder in the last two weeks is reported over the television, and police confess they have a psychotic madman on the loose, preying only on live-in nurses. One dark stormy night, Nurse Stella Crosson (Dana Wynter) and Nurse Betty Ames (T.C. Jones) are tending to their employer, a man with a heart condition who resides in a creepy old mansion just outside of town and needs constant attention. A phone call from the murderer informs the women that he knows they're alone, and intends to pay them a visit before the night is over. Checking to make sure all the doors and windows are locked, Stella finds that she overlooked a basement window, a mistake that might prove all too costly. Written by
Did You Know?
According to the TV Guide, the cast of "An Unlocked Window" were not given the final few pages of the script to safeguard its shocking ending. See more
In a brief exterior camera shot outside the Psycho house, we see Stella looking out into the stormy night through a ground-floor window. The window pane she looks through contains TWO sections divided in half horizontally. When the scene shifts indoors, the same window pane suddenly contains FOUR sections divided horizontally and vertically. See more