Overview
Wait Until Dark is a play by Frederick Knott, first performed on Broadway in 1966 and often revived since then. A film version was released in 1967, and the play was published in the same year.
Synopsis
Susy Hendrix is a blind Greenwich Village housewife who becomes the target of three con-men searching for the heroin hidden in a doll, which her husband Sam unwittingly transported from Canada as a favor to a woman who has since been murdered. "Roat" leads his companions into thinking that they are going to be rich and will get the heroin soon enough, but in the end he murders all of his partners after they outlive their usefulness.
The trio try to convince Susy that her husband will be suspected of murdering the woman, and the only way to protect him is to give them the doll, which connects him to her. Little do the men know that Gloria, a little girl in the upstairs apartment, has stolen the doll after finding out it was not a gift for her.
One of the men poses as Sergeant Carlino, a strange police detective, while another poses as Mike, an old friend of her husband dropping by for a visit. Susy relies on "Mike", and he eventually begins to feel sympathy for her.
From Wikipedia (CC BY-SA 4.0).