A successful writer of children's books, Stephen Lewis is confronted with the unthinkable—he loses his only child, four-year-old Kate, in a supermarket. In one horrifying moment that replays itself over the years that follow, Stephen realises his daughter is gone. Kate's absence sets Stephen and his wife on diverging paths as both struggle with an all-consuming grief.

Benedict Cumberbatchas Stephen Lewis
Kelly Macdonaldas Julie Lewis
Stephen Campbell Mooreas Charles Darke
Saskia Reevesas Thelma Darke
Andrea Hallas Policewoman
Jim Creightonas Male Neighbour
Franc Ashmanas Lydia Webb
Anna Madeleyas Rachel Murray