Mystery! Episodes on PBS

Aristocratic Scotland Yard sleuth Thomas Lynley (Nathaniel Parker) and his resentful working-class subordinate, Barbara Havers (Sharon Small), return in four new puzzlers. In the first, “In Pursuit of the Proper Sinner,” a young couple are found murdered at their campsite near Manchester. But as the investigation begins, Lynley is flying solo because the rule-bending Havers has been demoted. It's a complex case---too complex for the local police---and Lynley needs help.