Plot summary

Kit Preston (Doris Day) is an American living in London with her husband of three months, Anthony (Sir Rex Harrison). One foggy night while walking home through a park alone, Kit hears an ominous voice that tells her she will be murdered soon. She tells Anthony, who chalks it up to a prankster. However, Kit soon begins receiving threatening phone calls from the anonymous stalker. She and Anthony inform the police, but they assume Kit is just a lonely wife in need of attention. Soon, even Kit's loved ones begin to doubt her sanity as she is seemingly hearing and seeing things that aren't there. Is Kit losing her mind, or is someone really targeting her?