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.

A pharmacist is murdered, and a woman happens to see the culprit leave the scene. She soon finds herself being stalked by the killer, and when her boyfriend tries to discover who the murderer is and stop him, he begins to find out that there is much more to the murder than the ordinary killing it first appeared to be.