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.

Emma and Colin are in Ireland for their own personal retreat. Colin knows he's a reminder of everything Julianne wants to escape, but something about her trip raises his suspicion. Emma, an art crimes expert, is also on edge. Of all the Irish villages Julianne could choose…why Declan's Cross?

Ten years ago, a thief slipped into a mansion in Declan's Cross. Emma's grandfather, a renowned art detective, investigated, but the art stolen that night has never been recovered and the elusive thief never caught.

From the moment Julianne sets foot on Irish soil, everything goes wrong. The well-connected American diver who invited her to Ireland has disappeared. And now Emma and Colin are in Declan's Cross asking questions.

As a dark conspiracy unfolds amid the breathtaking scenery of Declan's Cross, the race is on to stop a ruthless killer…and the stakes have never been more personal for Emma and Colin.