沙岸之谜(The Riddle of the Sands)简介：
This book is often referred to as the first spy novel, and it is not wrong. However, to appreciate the novel, you have to know beforehand several things. But, don't worry, that is not much.

The story is narrated by an English gentleman Currthuers, who received an unexpected invitation of duck shooting from an old friend Davies. Being tired of his neglected position in "society," he accepts it to go to the North Sea only to find that he is involved in a mystery, or "the riddle of the Sands." His friend claims there's something in the air, something hiding behind the misty coast of Germany. But how can they prove it?