Haunted by inner demons, Josh Thurlow returns home to Killakeet Island to command a small Coast Guard patrol boat manned by a colorful crew of locals. Dominating the glorious beauty of the little island is the majestic Killakeet Lighthouse, kept for generations by the Thurlow family. Its presence is a continuous reminder to Josh of the mysterious loss of his baby brother at sea seventeen years before, a tragedy for which he was blamed. But Josh is convinced that his brother might still be alive and begins searching for him even after German U-boats arrive and soak the beaches with blood.

Josh's quest puts him in the path of Otto Krebs-the most audacious of the U-boat commanders and a deadly enemy who may also hold the answers Josh is seeking. But when he meets Dosie Crossan, a young woman fighting her own war against the invaders, Josh must decide whether to risk all on a love that could destroy him or redeem him...