Leave No Trace by Sammi Cee

A hitman with a reputation. A boy with a past.

Trace took a job at The Anonymous—the most exclusive club in the city—for a very specific reason. Only now that he’s there, he’s not sure how to get what he needs. He sure didn’t expect a killer Daddy to help him figure it out.
Kol always closes his contracts, and he never leaves loose ends. The powerful families of the city pay him to clean up their messes and keep their secrets—an arrangement that only works because he gives his allegiance to no one. Being a lone wolf has kept him alive, but even lone wolves get hungry.

A simple contract and one wrong turn bring Trace and Kol crashing together with a twist neither of them saw coming.