"Mr. Chanot's humorous take on the logical and rational is very entertaining."

The Erudition of Sherlock Holmes

Following on from their previous Misadventure, Holmes and Watson have committed themselves to rescuing Sherlock’s wife Irene, but could she really be working for Moriarty?

Dr Watson unknowingly holds a vital clue to the Professor M’s whereabouts. Meanwhile, Holmes takes them on a hiking expedition in the Scottish Islands, and they end up following a trail of clues which Watson believes are imaginary. 
And what on earth is Mycroft up to?