Janssen plays an ex-CIA agent who has become an author, writing both non-fiction exposes (Phillip Agee was in the news at this time) and fiction spy novels. The CIA is on his case, in the person of Arthur Kennedy, CIA chief in Athens, where Janssen is staying. Janssen is pursuing a case that interests him, while dodging the traps set for him by Kennedy and trying to help Maurizio Merli, a former colleague with personal problems.

1975 film by Romolo Guerrieri

A gang of cattle thieves rescue a criminal from the gallows, and later rob a stagecoach loaded with gold. When they get the loot, he is betrayed and left dying in the middle of the desert. In the escape they reach a mysterious ghost town, where they perceive there is something strange about ...

1976 film by Enzo G. Castellari