Night Sector by Lexi C. Foss

I never wanted a mate.
Especially not her—the notorious assassin known for killing Alphas.
But as fate would have it, she became mine.
Fortunately, we have an agreement. One where I rarely have to see her and she pretends I don’t exist.
Everything’s fine.
Until she’s kidnapped by a sadistic Vampire Alpha hellbent on turning her into his own personal Omega blood bag.
Now I’m the only one who can hear her screams.
And I’m really f-cking pissed off.
I might not want her as a mate. But she’s mine.
Mine to protect.
Mine to avenge.
Mine to hunt.
Don’t worry, little killer.
I’m coming for you.
And when I find you,
I’ll hand you the silver blade,
And watch you slay.