If you've seen "Dead Calm", save yourself the trouble of watching this film, which is like "Dead Calm" except that nothing much happens until the last ten minutes.

The title "Knife in the Water" refers to the critical moment when Andrzej (Leon Niemczyk) and the young boy (Zygmunt Malanowicz) finally have a bit of a confrontation and Andrzej drops the boy's favorite knife into the water. The boy then goes in after it (or falls in -- I can't remember) and since he can't swim, drowns. This leaves Andrzej and his wife, Krystyna (Jolanta Umecka) in something of a quandary about what to do (actually, Andrzej is the one in the quandary, but I don't want to ruin the ending).

Up until that point, the whole movie is kind of tedious as the three people hang out in close quarters on a small boat. The older Andrzej seems to want to show off for his young wife and prove he's better than the boy while the boy seems rather oblivious, if you ask me.

This movie was directed by Roman Polanski, so I'm surprised Andrzej's wife wasn't like 13 or so, but she seems legal.