Time was running out for explosives expert Captain Katherine Kane—and for the hostages she'd discovered in an underwater cave. For the terrorist holding the hostages was none other than Thomas Kunz, a diabolical man who'd found a way to replace U.S. government agents with look-alikes. Which meant Kate couldn't trust just anyone. Asking for Major Nathan Forester's help was a calculated risk—and one Kate might regret once the commanding Forester started dogging her every move. With seconds counting down and hundreds of people depending on Kate's skills to save them, it was time to be even sneakier than the bad guys....