Forever Again by Delaney Diamond

To get a second chance at love, two assassins must survive a criminal enterprise determined to wreak havoc in America’s Paradise.

Alissa Francis is at home on St. Thomas, USVI when Hossam Jalal—her former lover and biggest mistake—arrives unexpectedly. Then a bomb detonates in the middle of the capital, killing a prominent member of the community, setting the island on edge, and propelling Alissa into action.
Hossam initially came to the island to win back Alissa’s affection, but now he joins forces with her to uncover the motive behind the violence. The duo embarks on an investigation that leads them down the twisty path of a local legend and forces them to take the matter of saving the island into their own hands.