The River Wild (1994)

A former white water rafting and fishing guide takes her troubled 10-year-old son on a rafting trip, along with her workaholic husband Tom, whom she is thinking of divorcing. During the trip, the three meet up with two men; one of whom bonds with the son and takes an interest in the mother as well. All is not as it appears with the stranger, and the three are tested to their limits as individuals and as a family as the river carries them inexorably toward their final destination.