Savage Hearts by J.T. Geissinger

Savage (adjective):
1) Not domesticated; wild and untamed
2) A brutal or vicious person
3) Malek Antonov
When my older sister calls out of the blue to announce she’s getting married, it’s a shock. She’s not the settling-down kind, and we haven’t spoken in almost three years.
Even more of a shock? Sloane wants me to visit her and meet her new fiancé. Curious, I decide to take her up on the offer.
I should’ve known something was wrong when she wouldn’t tell me where I’d be going. I should’ve known things were odd when she sent a private jet to pick me up. But there’s no way in hell I could’ve ever guessed what would happen when I finally meet her fiancé.
Declan O’Donnell.
Head of the Irish Mob.
Target of a savage Bratva assassin who wants revenge for the murder of his brother.
Now, I’m thousands of miles from home, I’m smack in the middle of a mafia war, and I’ve got a Russian assassin who’s decided he likes the looks of me.
They say revenge is a dish best served cold.
They never met Malek Antonov.