Boys are mysterious creatures, with rich imaginations and inner lives at which most can only guess. Luckily, a few writers have the talent to capture their fantasies of extraordinary adventure and epic bravery. Inspired by the success of The Dangerous Book For Boys, the six titles of the Penguin Great Books For Boys collection celebrate the adventurer within every boy with tales of shipwreck, murder, espionage, and survival. With a striking series look that is nostalgic and, at the same time, completely modern, these Great Books For Boys are sure to appeal to boys young and old.

Tempted by the idea of duck shooting, Carruthers joins his friend Davies on a yachting expedition in the Baltic. But Davies has more on his mind than killing fowl. As they navigate the waters and treacherous, shifting sands on board the Dulcibella, Carruthers learns the real reason behind their trip and how the safety of Britain depends on it.

On a wild journey of intrigue and espionage the two men meet danger at every turn, encounter strange sailors and English traitors, and discover a fleet of German war ships assembling amongst the Frisian Islands, ready to invade across the North Sea…

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The riddle of the sands
The riddle of the sands : a record of secret service
The Riddle Of The Sands