U.S. Embassy employee Lee Cochrane and his wife, Sue, receive a shock when they discover that their 18-month-old son, Simon, has disappeared in London. He was last seen with their nanny, and the couple seemingly have no leads that might help police Detective Craig in his investigation. The media sensationalizes the incident, causing an unnecessary distraction as the couple prepares to confront the culprit face-to-face.
David Farrar
as Detective Inspector Craig
David Knight
as Lee Cochrane
Julia Arnall
as Sue Cochrane
Anthony Oliver
as Sergeant Lyel
Thora Hird
as Kelly's landlady
Eleanor Summerfield
as Sergeant Cook
Anne Paige
as Nanny
Marjorie Rhodes
as Mrs. Jeffries
Anna Turner
as Mrs. Robey
Everley Gregg
as Viscountess Cardale
Meredith Edwards
as Sergeant Davies
Irene Prador
as Mitzi
