This surprisingly watchable multiplex filler casts Amanda Seyfried as a sort of hyper-neurotic Nancy Drew: a waitress rattling round on antidepressants after the trauma of an unsolved (and unproven) kidnap attempt, who returns home one day to find her sister has vanished in similar circumstances. Forced into playing detective, her capacity for  spinning tall tales to elicit info sets us to wonder if there isn't something in the fact that the authorities have her down as a lunatic with a handgun. Allison Burnett's screenplay parcels out brisk character notes with its twists, while Brazilian director Heitor Dhalia – taking the Hollywood coin after his arthouse break-through Adrift – seeks out Portland locations that prove almost as colourfully fertile as our heroine's imagination. It's daffy, but it works.