Jump into an adventure that spins you in a vortex to the Chesapeake Bay and the Florida coast! Grab onto the mystery of an age-old rope mired on an island shore and see how it leads to incredible discoveries - twenty-five years later. For top hydro-space scientist Alyce de Blaine, it opens her eyes to the fourth dimension, it unravels long-hidden family secrets, it pits her against unscrupulous treasure hunters, and it, perhaps, leads to a new love. With her feisty feline friend, Alyce races to halt an undersea menace from Hitler's world . . .