Sherlock Holmes, safe in the bee-loud glades of the Sussex downs, is lured back to London when a problem is posed to him by Dr. Watson and Watson's friend, Col. Higgins. Posing as a rich American gangster, Holmes infiltrates the Higgins household. He meets Freddy, a seemingly ubiquitous suitor, and the mysterious Baron Von Stettin, Bavarian attache. He brushes up against a doctor whose potions can turn Eliza from a spitfire into a kitten. And he faces a deadly enemy who had been thought dead for twenty years. The world of Sherlock Holmes will never be the same.