Death in a Chocolate Box

Reformed criminal Ronnie Tyler prepares to leave Midsomer Holm, a tranquil village and halfway house founded by Lord Holm and detective-turned-psychotherapist Professor Gina Colby. At the heart of the village is an historic camera obscura. New arrival Eddie Marston takes Ronnie's place, which DCI Barnaby is uneasy about. Meanwhile Gina's husband Jack, a former DS at Causton, is having trouble sleeping, haunted by the past.