Action and adventure in Book 2 in the acclaimed Icebreaker trilogy. Sharkey is a Sunker--he was born on a fortunate tide, and everyone in the giant submersible Rampart knows it. He's a hero, a future admiral, beloved by the ancestors who his crew believe visit him in the form of sea creatures. The trouble is his life is based on a lie--he's never been visited by ancestors. He's been a fake hero for years, but when the Sunkers are attacked, he must...

Describes the coolest weapons used by militaries around the world.

Discusses the weapons, tank combat, U-boat activities, fighter planes, and campaigns of World War II.

One of the trophies in the Batcave is Mr. Freeze's freeze ray, which he uses to create a zone of intense cold around himself as he attempts to steal a valuable diamond necklace--and it is up to Batman to stop the supervillain.

Publisher Annotation: Bomb meets Code Girls in this nonfiction narrative about the little-known female scientists who were critical to the invention of the atomic bomb during World War II.