Inspector Winship (Knotts) and Dr. Tart (Conway) are a pair of Scotland Yard investigators who are called on to look into the mysterious murders of Lord and Lady Morley. At the possibly haunted Morley mansion the bumbling duo have to deal with a bizarre household staff a wealthy heiress and more in this hilarious spoof of Sherlock Holmes and other mystery stories. One of the best pairings for Knotts and Conway with plenty of inspired slapstick and wackiness.