When the USS America, the latest and most intricate nuclear submarine, is stolen, Admiral Jake Grafton is called in to investigate the matter and soon learns that whoever is masterminding this operation means business when missiles are launched, destroying the top floor of the White House and an airliner, and Jake must race against time to stop the destruction.

After Owen captures an enormous bullfrog, names it Tooley Graham, then has to release it, he and two friends try to use a small submarine that fell from a passing train to search for Tooley in the Carter, Georgia, pond it came from, while avoiding nosy neighbor Viola.

"It may be autumn on Cranberry Island, Maine. but things are heating up for innkeeper Natalie Barnes - and not just because of the cranberry scones in the oven. When a research team discovers the remains of a long-missing German U-Boat just offshore, the Gray Whale Inn becomes the center of operations for the eccentric multmillionaire funding the team. But the excitement over the discovery is soon dampened when something else turns up next to the...