The consulting detective has got a new case. Two tourists have been murdered and the only clue he has to go on is their six year old son who witnessed it all. Unfortunately it seems that Calvin, and his stuffed tiger Hobbes, aren't that keen to co-operate. Alternating fluff and angst depending on my mood.

A case brings Sherlock and John out into the middle of nowhere in Ohio in America, to meet a child that fascinates one of the world's smartest men: Calvin.