Hetty Wainthropp is certainly the most unusual of detectives. Armed with little more than her pocketbook and her prodigious common sense, the Lancashire housewife-turned-gumshoe has proved that she can easily match wits with the best of them even if she has to take the bus to get to the scene of the crime.Starring award-winning actress Patricia Routledge (Keeping Up Appearances) in the title role, Hetty Wainthropp Investigates returns with four beguiling new cases. In this new round of adventures, Hetty goes undercover in four wildly different roles, demonstrating her continued fearlessness in the face of criminal offences (and providing an acting field day for Ms. Routledge). Still by Hetty's side are her recently retired husband Robert (Derek Benfield) and Geoffrey Shawcross (Dominic Monaghan), the teenager rescued by Hetty from a dodgy career of shoplifting and who now lives with the Wainthropps and acts as Hetty's investigating sidekick.