Otto Preminger directs this classic thriller starring Laurence Olivier and Carol Lynley. A young American mother who has recently moved to England goes to pick her daughter Bunny up from her first day at school only to find she's missing. As the police investigation gets underway, it becomes apparent that this is far from an ordinary missing kid case: in fact it seems that, given the evidence, Bunny Lake never existed. As the case unfolds, the police, led by Superintendent Newhouse (Olivier), begin to suspect that Ann Lake (Lynley) may be suffering from delusions and that Bunny might be no more than a figment of her imagination. Worse yet, Ann's brother (Kier Dullea) backs the police theory.