1942. <BR> The United States is at war with Germany. Fourteen-year-old Jill Winter's mother is traveling to Newfoundland to be with Jill's sick uncle and must pass through the treacherous North Atlantic where German submarines -- U-boats -- stalk like wolves. Jill's father, a famous pop singer, is on tour, so Jill is sent to Winter Haven, Maine, to stay with Nana. <BR> Quarry, a local boy, says that "gossip ain't never been so good," and Jill soon discovers he's right -- Winter Haven is full of secrets and rumors. First there's Wendy, a teenager who's visiting her aunt Adrie, the owner of a local inn, and who tells so many fanciful stories and secrets, it's hard to know what's true. Then there are the Crystals, a snobbish girls' club, who blackball Wendy because of a dark secret they reveal to Jill. Even Nana seems to be keeping secrets -- with her <I>German</I> friend Ida Wilmar! Who's a friend and who's an enemy? <BR> As German subs torpedo American and Canadian ships off the Maine coast, Jill is anxious for her mother's safety. Her fears are heightened when she finds a wounded pigeon with the message <I>Sonnabend iv</I> attached to its leg! When Nana and Ida Wilmar whisper to each other and Jill hears that same word -- <I>Sonnabend -- </I>she determines to uncover the truth behind the mysteries in Winter Haven. But she soon finds herself in grave danger when she uncovers the biggest secret of all -- and must run for her life! <BR> Based on startling historical events that took place in the harbors of Maine during World War II, <I>Shadows on the Sea</I> is a fast-paced mystery that will keep readers guessing from beginning to end.