Imposters in Paradise — Maxine Barry

Suspecting that her brother Robbie's death was not an accident, but that he had been murdered, Imogen Dacres travels to Bermuda. An enigmatic letter he'd sent suggested trouble of some kind, though Imogen is not sure quite what he had hinted at. On the journey, fate gives her the perfect opportunity to discover the truth without putting herself in danger. In Bermuda she meets Morgan Dax, the man her brother worked with and with whom she falls deeply in love...but can she trust him?