You've already broken codes in Sinclair McKay's bestselling Bletchley Park Brainteasers, now it's time to pit your wits against the secret heroes of MI5 and MI6

WOULD BLETCHLEY PARK--THE TOP-SECRET HOME OF BRITISH WORLD WAR II CODEBREAKERS--HAVE RECRUITED YOU? PUT YOUR MENTAL AGILITY TO THE TEST WITH THESE FIENDISHLY CH

Have you daydreamed of being approached to be a secret agent? Imagined yourself being propelled into the dangerous and elegant world of spies? Blending extraord

NEW YORK TIMES BESTSELLER • The first definitive account of the rise and fall of the Secret Service, from the Kennedy assassination to the alarming lapses of

Pit your wits against the brilliant minds of Scotland Yard and see if you have what it takes to solve dozens of the world's toughest crimes. "Scotland Yard" con