The sleuth investigates an officer's death, with the regimental honour of the Royal Mallows at stake. Stars Clive Merrison.

A doctor calls on the sleuth, after the mystery death of his landlord - and the arrival of some Russians. Stars Clive Merrison.

Watson is introduced to the sleuth's brother Mycroft - and all three tackle the case of a Greek captive. Stars Clive Merrison.

Watson's old school chum faces ruin if a secret government document can't be found. Stars Clive Merrison and Michael Williams.

With the culmination of his life's work, the detective prepares to meet his greatest adversary. Starring Clive Merrison.