John Blumer is a former murder investigator, who now runs his own private investigators service. One day a man enters his office with two news paper cuttings; one old and one new. The headline on the old one is one he knows all too well: THE DOOR IS STILL AJAR. That is what he said to the press after Leon Boyd a former circus strongman and brutal murderer had finally been trapped in an office building, where he had been trying to abduct his latest victim. Suddenly Boyd throws the girl from a fifth floor window and then jumps to his own death. The police are anxious to close the case, but Blumer is convinced that Boyd well may have had an accomplice. He has been ordered by his superiors to retract this statement to the press. He refuses and is removed from the case. In disgust and bewilderment he takes early retirement. The man is the father of Leon Boyd's last victim and points to the headline in the later news paper. A girl has been brutally abducted in a sea-side resort by somebody with immense strength; very similar to Boyd's modus operandi. He asks Blumer to travel down to the resort to conduct his own investigation; all expenses paid, plus his fee. Blumer jumps at the chance. But what he doesn't realise; he is about to embark on a murder investigation that will push him far beyond any boundary, or understanding of any criminal mind.