For marine biologist Julianne Maroney, two weeks in tiny Declan's Cross on the south Irish coast is a chance to heal her broken heart. She doesn't expect to attract the attention of FBI agents Emma Sharpe and Colin Donovan -- especially since a Donovan is the reason for her broken heart. And the well-connected American diver who invited her to Ireland has disappeared. As a dark conspiracy unfolds, the race is on to stop a ruthless killer.