Tom Clancy Shadow of the Dragon

A missing Chinese scientist, unexplained noises emanating from under the Arctic ice, and a possible mole in American intelligence are just some of the problems that plague President Jack Ryan in the latest entry in Tom Clancy's #1 New York Times bestselling series.

Aboard an icebreaker in the Arctic Ocean a sonar operator hears an unusual noise coming from the ocean floor. She can't isolate it and chalks the event up to an anomaly in a newly installed system.

Meanwhile, operatives with the C...