Easy to watch, easier still to forget, Wolfgang Petersen’s thriller, which he adapted from Richard Neely’s novel The Plastic Nightmare, starts off with an elaborate car crash that renders the wealthy hero (Tom Berenger) amnesiac. Nursed back to health by his beautiful wife (Greta Scacchi), who survived the same accident unharmed, he begins to uncover disturbing facts about both her and himself. As usually happens with such exercises, this turns out to be very surprising and very implausible in about equal proportions; the settings are in and around San Francisco, but Vertigo this ain’t. Bob Hoskins plays a likable detective and pet shop owner, and Joanne Whalley-Kilmer and Corbin Bernsen contribute a few smidgens of additional intrigue. (JR)