Cyril Boggis, antiques dealer (John Gielgud), is more than a bit crooked and is always on the hunt for a bargain, under the guise of 'The Society for the Preservation of Rare Furniture' and a clergyman's collar.
With his plummy accent and bearing he's never going to cause suspicion, and we see him charm his way through country houses until one day he meets a farmer, Mr Rummins (Bernard Miles), who has something a bit unexpected hiding under his ferret cage.
This episode is great fun and beautifully acted by the two theatrical knights, and has a satisfying twist even if you can see it coming quite a few minutes before. One of the better Tales in the series and well worth a look.