American marine, David Berman, manages to get himself transferred to Paris in order to search for a hidden Nazi, Krugman that had killed his grandparents and crippled his mother. He managed to find a witness but just after she talks to David, she is run over and killed. That night, he is kidnapped by a shadowy organisation and told that Krugman is hiding under a new identity of Felix Altmann. David goes to a health spa and meets Altmann but Altmann is shot and David framed for the crime. As a old friend of the family Perry and Ken goes to France to help out but now Perry must not only free David he must find out secrets that have been kept hidden for over 45 years, secrets that certain people are still certainly willing to kill for...

Continuity: Paul Maxwell's character is credited as Captain Calvelli despite being referred to as Colonel Calvelli throughout.