Paradoxically, this would be a pretty good little thriller if it didn’t have any characters—or, rather, if it did have some characters who weren’t strictly slaves to the thriller mechanics. Instead, it starts off with characters and winds up with some rather effective jolts that make them evaporate. We begin with Goldie Hawn happily married to John Heard; what happens after that is best left to screenwriters Mary Agnes Donoghue and Derek Saunders; Damian Harris directed, and Ashley Peldon, Robin Bartlett, Tom Irwin, and Amy Wright costar.