The whole premise to this is fine. As a matter of fact, had this not been such a successful series, certain things could be overlooked. However, after the the supposed suicide of a man, hated in the community, is revealed as a murder, things go off in all directions. Barnaby has worked with a pretty psychiatrist in the past. She has skills as a profiler and runs a kind of sanitarium which services all areas of mental illness. She lives with her three children and was widowed when her husband fell during a climbing outing with the children. When Barnaby comes to review the case, Troy fears his boss has designs on her (or she on him). Soon there are murders where people are hanged, though they have been killed first. There is lots of rope used in these situations, and that becomes a central focus of the case. There is one last minute rescue that kind of overshadows the verisimilitude of this episode. It also depends on some outrageous wickedness on the parts of more than one person. It's still fun, but there are so many plot hole and motivation issues.