Templar receives a request for protection from a beautiful girl (June Ritchie) claiming to be Hitler's daughter; guest Noel Purcell.
The Saint finds himself playing a deadly game of cat and mouse with a would-be killer. Simon's dilemma is twofold: why should anyone want to put a dent in his halo and who is the man known only as 'The Avenger'?
Steed takes a country drive, Cathy endures a night of terror.
