Ep. 11: Sherlock Hound and Watson investigate the missing twenty Sovereign Gold Coins
Aired on January 29, 1985

Sherlock Hound and Doctor Watson receive a request to look into the vanishing of twenty Sovereign Gold Coins. The items were stolen from a safe that was specifically built to secure them. The duo must examine the scene to determine how the theft occurred and locate the missing currency.
Episodes
- Ep. 7 · Moriarty's theft of a gold statue leads to a chase at the docks
- Ep. 8 · A young woman returns to England from America and discovers her uncle has changed significantly.
- Ep. 9 · Royal Navy requests Hound and Watson to recover a submarine stolen by Professor Moriarty
- Ep. 10 · Hound, Watson, and Mrs. Hudson investigate sabotage of England's new Air Mail service to Europe.
- Ep. 11 · Sherlock Hound and Watson investigate the missing twenty Sovereign Gold Coins
- Ep. 12 · Hound shadows a cash carriage after police sabotage prevents escort
- Ep. 13 · Hound investigates the mysterious disappearance of a freight car on a train to London
- Ep. 14 · Hound and Watson pursue Moriarty for stolen diamond coral lobster carvings
- Ep. 15 · A bank's gold vanishes alongside a sculptor, implicating Moriarty through statue sketches.