Christopher Lee ("Col. Bingham") is the retired policeman who recruits the help of renowned pathologist "Sir Mark Ashton" (Peter Cushing) to help out when the trustees of a children's charity start to dying in what, he thinks, are mysterious circumstances. It all starts with a bus crash that left charred remains when there was no fire, and ends up on a remote Scottish island where perhaps even the children at at risk. There's a great deal of over-acting here - especially from Diana Dors as the mother of one of the children "Mary"; and from a young Gwyneth Strong as that very child. Fulton Macka... read the rest.