Streep on top form as an experienced water-raft navigator, who takes her son on a river ride for a birthday treat. When the boys' father reluctantly joins them the family meet up with a couple of seemingly nice guys who accompany them. But things soon take an unexpected turn for the worse when the men are revealed to be armed and on the run from the law, turning the family vacation into a nightmare.
Definitely one of Meryl's best movies in recent years, with her performing most of her own stunts.