Coplan sauve sa peau

In Istanbul, a young woman is attacked by six thugs and the agent Frank Milland who had set a rendez-vous with her, is outnumbered, and she dies. Frank is menaced later in order to stop his inquiry about the thugs identities. Each clue he follows leads to more and more danger. Then he comes across Eva, a young woman who is the dead girl's spitting image; either she is her twin sister, or the woman who died in his arms. Eventually he encounters a mad sculptor, who is more than he pretends to be.