The Letters of Septimus Noone (S05E01)

When a glamorous West End star is found stabbed inside a locked dressing room, her colleagues remain baffled. Attention turns to Jonathan Creek for a solution to the grisly puzzle. But can Creek be persuaded to join the investigation? As he and his wife struggle to come to terms with a personal tragedy, a series of disturbing family secrets are revealed that will throw the couple's world into turmoil. (iTunes)