For those that read the book, they'll know how harrowing, yet compelling a tale this is.Tilda Swinton stars as a mother who receives the shocking news that her teenage son has committed a terrible crime. Tormented with guilt and grief, she begins to pick apart the key events of his childhood, trying to work out if she ever truly loved him, and if she is responsible for turning him into a monster. Swinton is amazing in this, but yep, the story is about as far away from lighthearted as you'll get, but well worth the watch.