Mystery! on PBS

In this episode of “Inspector Lynley Mysteries,” Lynley and Havers (Nathaniel Parker, Sharon Small) probe the demise of a Lancashire vicar who died after eating hemlock. The New Age herbalist (Pippa Haywood) who prepared the reverend's last supper says she picked the hemlock thinking it was parsnip. She ate it, too, but survived because she took an emitic and vomited. But she isn't the prime suspect. Meanwhile, Lynley's profiler friend Lady Helen Clyde (Lesley Vickerage), for whom he carries a torch, offers some freelance assistance on the case, but she doesn't make his life any easier.