Who's kidnapping the children of London? Even famous detectives need help. When Sherlock Holmes is stumped by London's greatest crimes, he turns to the Baker Street Brigade - orphans Danny Wiggins, P.T. "Peachy" Carnehan, and Duff Bernard. Then it's a race through danger and heart-stopping adventure to solve the mystery. When Clair - daughter of Inspector Avery of Scotland Yard - disappears from her home, the search for the villains becomes desperate. The Baker Street Brigade must find their friend... before it's too late.