A One Woman Job by Jessa Kane

Meg is in big trouble. A loan shark is demanding repayment of her father’s debt, but as the sole breadwinner for her four younger siblings, money is stretched to the limit and she can’t afford to pay—at least, until she’s offered an unconventional solution. Seduce a recently retired hitman into returning to his post. If she can’t accomplish her goal, the safety of her whole family will be in jeopardy.
After being confronted by his past in bloody fashion, Koen no longer wants to lead a life of violence. He wants quiet and solitude in his home overlooking the ocean. But when a young, hazel eyed beauty has the nerve to almost drown in the turbulent waters and requires rescuing, he’ll stop at nothing to keep the one woman to ever challenge his surly nature, her ulterior motives be damned.