In Harm's Way (Guardian #5)
Traci Hunter Abramson

It’s been years since Jocelyn has been able to relax, and the family island is the clear antidote to the chaos of the business world. Expecting solitude, she is taken off guard by the presence of the handsome house sitter living in her sister’s home. Though she and Troy fall into an easy friendship, beneath his calm demeanor, he is an enigma. It’s clear the man who is quickly stealing her heart has a secret, but the truth is beyond Jocelyn’s widest imaginings: Troy is involved in stopping a political coup, and their relationship threatens to place Jocelyn squarely in the crosshairs of a deadly assassin.