Alistair Sim is brilliant in the title role. This is a filmed stage play, but in absolutely the best possible connotations of the phrase; it gives the viewer the sense of intimacy and participation one gets from watching live theater. The tale itself basically combines a bit of "Tales From The Unexplained" with Noel Coward and Aesop's Fables with a dash of Hitchcock for good measure. More than that I shall not say except all four of the family members' supporting performances are excellent. When this inspector calls, he is not soon forgotten.