Filmed mostly in Greece, this is a flawed but enjoyable giallo. The editing is incredibly jerky at times, the gore effects are unconvincing (the blood looks like red paint) and the solution, while fairly unexpected, is not the most original you're ever likely to come across. But the smooth George Hilton and the voluptuous Anita Strindberg (she could have easily been one of the best Bond girls) make an attractive couple, the story dares to break some conventions (the first slashing comes when you least expect it) and mystery fans should generally be pleased. (**)