The Lost Lover by Karen Swan

An epic, sweeping historical novel of second chances and lovers reunited . . .
Flora MacQueen has always dreamt of more than life on the small Scottish island of St Kilda. So, when she catches the eye of visiting adventurer and wealthy businessman James Callaghan, her future seems brighter. Winter seas separate the lovers, but the island's evacuation the following summer promises to reunite them - until tragedy strikes.
Heartbroken and needing to support her family on the mainland, a chance meeting offers hope. Soon, Flora is the toast of glamorous Paris; fame and fortune are hers for the taking. But at a high price.
When a scandal erupts back home, Flora is implicated, along with her friends Effifie and Mhairi. But as dark secrets come to light, it is a lie by a fellow islander that changes everything . . .