From the rooms a 221B Baker Street, the mind that strikes fear into the heart of London's criminal fraternity turns its attention to some of the strangest and most intriguing cases ever to be set before the great Sherlock Holmes. Adventures included involve the disappearance of Lady Frances Carfax, the mystery of the Devil's Foot, a deadly little box and a monstrous assassin on the streets of London. All test the courage of Dr Watson and the intellect of the greatest detective of them all, Mr Sherlock Holmes.