$$$ | Netflix
Released: 1990
A daring African adventure turns to terror when four Americans hire river guide Ray (Stephen Shellen) to escort them on a whitewater rafting trip down the Zambezi River. But as they pass downstream and the rapids grow more turbulent, so does Ray's behavior. Soon he's abandoned all pretense of civility and is mentally and physically abusing his passengers, who find themselves far, far from home with a madman controlling their fates.