An unseen killer is murdering people that know too much in connection with an earlier unsolved case of a missing girl. I like the giallo genre, but this one by Tonino Valerii is laid back to the point of being tedious, a few gory set-pieces can't even help this film. The ending is horribly cliché and the film has one scene that featured a fully naked prepubescent girl that repulsed me. There is NO reason to put a nude eleven or twelve year-old in any film. EVER!

　　这位智慧而经验丰富的爱情艺术大师在年轻人去世前将他的知识和技巧传授给他。

A master thief, just out of prison, concocts a risky final score that would net him over a million dollars.