Deep in the heart of a big city . . . Bernard is a bike messenger who blows his red whistle to let people know he's coming through. But his whistle's missing. Where could it be? This sounds like a case for the High-Rise Private Eyes— Case #007, to be exact, The Case of the baffled bear Because no mystery is too mysterious, no puzzle too puzzling, no crime too criminal, no trouble too troubling for ace detectives and very best friends Bunny Brown and Jack Jones.