Edwin Antony (Hywel Bennett) is emasculated in an accident which kills a young philanderer. Doctors successfully replace his member with that of the dead man, but refuse to tell him the full story of the organ's origin. So Edwin begins a search which takes him to the philanderer's wife - and also to his many, many girlfriends...

When a strange woman has her baby at the Marlowe's house, then disappears, Kate Marlowe is forced to keep the baby, Bonnie. She loves the child, but when her own children are systematically killed, suspicion turns to Bonnie.