BY FREDERICK KNOTT
A sinister conman looking for a mysterious doll, visits the apartment of Sam Hendrix and his blind wife, Susy. With Sam potentially implicated in a recent murder, Susy realises the doll could be the key to his innocence and refuses to reveal its location. A deadly game of cat and mouse then ensues between the two of them and 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 deadly game is over.
From the author of Dial M for Murder. Made into a film starring Audrey Hepburn in 1967