Written by Charlotte Armstrong. An unsuitable babysitter is left in a hotel room for the evening to look after Bunny, the daughter of Peter and Ruth Jones. When the first choice of babysitter had pulled out, Eddie the hotel elevator operator found them a substitute in his niece, Nell. A stranger called Jed starts drinking with Nell, then Bunny wakes up and things start getting dangerous ...Charlotte Armstrong was an American author who received the prestigious Edgar Allen Poe Award and died in 1969. Mischief was turned into a film called 'Don't Bother to Knock' with Marilyn Monroe, Ann Bancroft and Richard Widmark.