When various trustees of the Van Traylen Orphanage begin dying in close order, it's at first written off as a coincidence. But, when a school bus accident very nearly takes out three more of them along with a group of orphans, Col. Bingham (Christopher Lee) and his pathologist friend, Mark (Peter Cushing), begin looking into the deaths. They come to think the answer lies with one of the girls on the bus, who has vivid memories of things she could not possibly have seen.
Christopher Lee
as Col. Charles Bingham
Peter Cushing
as Sir Mark Ashley
Diana Dors
as Anna Harb
Georgia Brown
as Joan Foster
Keith Barron
as Dr. Haynes
Gwyneth Strong
as Mary Valley
Fulton Mackay
as Cameron
Michael Gambon
as Insp. Grant
Duncan Lamont
as Dr. Knight
Kathleen Byron
as Dr. Rose
John Robinson
as Lord Fawnlee
Morris Perry
as Dr Yeats