This is the first episode of the US TV series "CBS Children's Mystery Theatre", titled "The Treasure of Alpheus T. Winterborn". It was also released on VHS in the UK under the name "The Clue According to Sherlock Holmes". From IMDb: "What kind of mystery could possibly occur in a sleepy country town like Winterborn? Join Master Detective Sherlock Holmes and Dr. Watson as they host The Clue According to Sherlock Holmes! When old Alpheus T. Winterborn died he left behind a mysterious legend. It was said he buried a fortune somewhere in town. But where? There must be a clue! The "game is afoot" - as Holmes would say - when a ten-year-old turns detective. He accidentally stumbles upon the first of Winterborn's clue to the treasure...but it doesn't make sense! Match wits with young Anthony Monday and his friend Miss Eells as they attempt to unravel the mystifying riddles. Challenge your powers of deduction to solve this mystery that could be worth a fortune."