A few years before he went on to make a big splash in the cannibal sub-genre, Ruggero Deodato directed this successful rip-off of Roman Polanski&#039;s brilliant Knife in the Water. Naturally, being an Italian film - there's more of a focus on sex than the relationship between the central couples, but the claustrophobic atmosphere and entertaining characters help to keep the tension... (展开全部) A few years before he went on to make a big splash in the cannibal sub-genre, Ruggero Deodato directed this successful rip-off of Roman Polanski's brilliant Knife in the Water. Naturally, being an Italian film - there's more of a focus on sex than the relationship between the central couples,  but the claustrophobic atmosphere and entertaining characters help to keep the tension bubbling over, which ensures that the movie is interesting for the duration. The film doesn't have nearly as much 'bite&#039; as Cannibal Holocaust and most of the rest of Ruggero Deodato&#039;s filmography, but it's obvious that even with this early film; Deodato is a director with the potential to make a mark on cinema. The plot is simple in that it just focuses on two couples. George and Silvia invite Irem and Barbara for a weekend cruise on their yacht. It soon transpires that George isn&#039;t the most sensitive man to ever live,  and Silvia doesn't seem to mind him treating her badly. The situation escalates, and Irem and Barbara join forces with Silvia for vengeance against George...and three way sex, of course.A few years before he went on to make a big splash in the cannibal sub-genre, Ruggero Deodato direct