Since it opened its doors in 1829, Scotland Yard has used the science of detection to solve the most macabre of murders and catch the most audacious of thieves. The Scotland Yard Puzzle Book takes a look through the history of this famous institution and recreates some of the most complex conundrums its detectives have ever faced. Technology can now shine a light on some of the most difficult cases, but the analytical mind needed to crack the clues remains as essential as ever. Do you have what it takes to be a Scotland Yard detective?