With his wife, the acclaimed actress Stella Pinero, away on a movie shoot in Scotland, Chief Commander John Coffin is at a bit of a loose end with just the cat and dog for company. But one morning, as he checks through the mail for his wife, he gets a rather unpleasant surprise: horrific pictures of badly abused children sent anonymously to Stella. Rather than worry his wife, he vows to track down the culprit and calls in a trusted colleague, DCI...