Whilst we don’t know exactly what happened, we quickly discover that a father (Benedict Cumberbatch) and his two young sons (Henry & Richard Boxall) are recovering from the fairly traumatic death of their wife/mother. Dad is trying to put as brave a face as he can on daily life as he tries to keep the kids motivated at home and at school and whilst he continues his work as an animator for a darker, more adult, market. Things start to take quite an ominous tone at his increasingly disordered home, when he begins to hear things, to see things - and a crow he has been drawing seems central to thos...