Susy Hendrix is a blind housewife who becomes the target of three conmen searching for the heroin hidden in a doll, that her husband Sam unwittingly transported from Canada. Through cleverly constructed deception, the conmen convince Susy that the police have implicated Sam in murder.

A deadly game of cat and mouse ensues between the two. Susy knows the only way to play fair is by her rules, so when darkness falls, she turns off all the lights leaving both of them to manoeuvre in the dark until the game ends.