It was the assignment of a lifetime. . . . Brilliant marine architect Hannah Bryson has been given a priceless opportunity. A U.S. maritime museum has just acquired the former pride of the Soviet fleet, the decommissioned submarine Silent Thunder, for public exhibition. Hannah must inspect every single inch of this legendary nuclear attack sub and design modifications that will make it safe for the thousands of expected visitors. Enlisting the aid of her brother, Connor, they examine the enormous vessel and delve into its long and lethal history. But it was a trap. . . . On a routine check, Connor discovers a mysterious message behind one of the ship's panels. But before he can figure out what it means, there's a deadly assault on Silent Thunder. . . . The U.S. government warns Hannah against it, but she'll stop at nothing to find the ruthless mastermind behind the plot. Even if it means joining forces with a mysterious man who may be even more dangerous than the enemy she has sworn to bring down. As Hannah finds herself caught in the crossfire of an epic standoff, her only hope for survival is to unravel Silent Thunder's explosive secret. But someone's willing to kill to make sure Silent Thunder stays silent. . . . Brisk, exhilarating, and filled with authentic details, Silent Thunder is the brainchild of the biggest name in suspense teamed with the stunning, intricate plot twists of an Edgar Awardwinning author. Get ready for an incredible thrill ride! Praise for Iris Johansen and Roy Johansen "The adrenaline-fueled narrative will keep Johansen fans eagerly turning the pages." - Publishers Weekly on Quicksand "An absolute stunner of a thriller." - Booklist on Beyond Belief