Benedict Cumberbatch (Sherlock) stars as Stephen Lewis, a successful writer of children's books confronted with the unthinkable: his only child, four-yearold Kate, disappears in a supermarket. With tenderness and insight, this critically acclaimed BBC production explores the dark territory of a marriage devastated, the loss of childhood, the fluidity of time, grief, hope and acceptance. Based on the award-winning novel by Ian McEwan. 90 mins, 1 DVD, SDH.