Twin brothers Denny and Steven Anderson love helping people and fighting crime alongside their sheriff dad on sun-drenched Fisher Key, Florida. Steven likes chasing girls. Denny longs to lose his virginity, but doesn't dare tell anyone he's gay. Steven has a secret of his own. He lied to everyone, including his own brother, about being accepted into SEAL training for the U.S. Navy. On the day they graduate high school, the twins meet the handsome new guy in town, a military veteran with a chiseled body and mysterious past. Meanwhile Brian Vandermark, a gay transfer student from Boston, finds himself falling for closeted Denny but hampered by his shyness. When an antique yacht explodes in Fisher Key harbor, all three boys are caught up in a summer of betrayal, romance, and danger. It's the Mystery of the Tempest—and it just might kill them all.