Final part of this supernatural thriller starring Michael Palin, who plays care home resident Tom Parfitt. Tonight, Tom mysteriously goes missing, much to Hannah's dismay, she calls DI Fairholme who informs her that he has been spotted in a nearby caravan park, but what state will they find him in? Will he be able to give any more leads on the case? And just WHAT in God's name is the deal with that Scarborough Fair song?