Unhappily married research scientist Yvonne Carmichael (Emily Watson) had no regrets about her impulsive fling with a handsome stranger (Ben Chaplin). The passionate physical encounter leads her to seek him out as a lover, a confidant... and, after her brutal assault by an obsessed colleague, an accessory in a revenge scheme that would change their lives forever. Absorbing adaptation of the Louise Doughty thriller co-stars Mark Bonnar, Steven Elder, Susan Lynch, Kezia Burrows. 4 hrs. Total on two discs. Widescreen; Soundtrack: English.