Publisher's Synopsis
Private detective, Bob Crowder, is the man behind the mask. He had some ingenious ways of ferreting out crime--fighting crooks by acting like a crook! Erle Stanley Gardner (famous for Perry Mason) wrote four stories about Bob Crowder. We have gathered them all together in this book. Follow his exploits in: SECOND-STORY LAW RESTLESS PEARLS BEHIND THE MASK THE JACK OF HEARTS
