The Reaper’s Vow by Avelyn Paige

Damien Marek doesn’t make mistakes. As the Bellandi family’s enforcer—and a ruthless werewolf feared in the darkest corners of the paranormal underworld—his job is simple: find the threat, eliminate it, and disappear. But when a rogue wolf stirs up chaos at one of the Bellandi sex clubs, Damien’s mission takes an unexpected turn.

Karina Greene is done playing it safe. Burned by a controlling ex, a night of freedom at an exclusive club is exactly what she needs to reclaim herself. Until she opens the wrong door… and sees a man with silver eyes and a smoking gun standing over a body.
Now she’s a witness. A liability.
And Damien? He never leaves loose ends.
But the woman in the black rabbit mask vanished before he could finish the job—and something about her scent won’t let him forget.

In a city where monsters rule the night, desire is a dangerous game… and claiming her may just cost Damien everything.