King of the Cage (Devil's Own #1)

He was my enemy with benefits until... he wanted more.

They call him the Lost Boy of Hell's Kitchen.
A legendary fighter, an ex-con and son of the Irish Mob... Bran O'Connor has trouble written all over him.
It was supposed to be a one night thing, but that turned out to be only the beginning.
When I get in over my head with a secret society, I have to rely on him to protect me.
He'll do it... for a price.
My hand in marriage.

King of the Cage is a dark Irish mafia romance featuring an Irish mobster, forced marriage and a dark and twisted secret society. This hero is OTT protective, and the object of his obsession is a stabby, black cat heroine. Set in a dark and dangerous world, check the TWs in the book, and only read if you are over eighteen.