Not My Sinner (Brooklyn Sinners, #4.1)
Avril Ashton

Nothing is easy, definitely not marriage to a man who’s been as broken as Tommy, but Mateo signed up for the long haul. He’ll make sure his T knows he’s loved, no matter how many bodies he has to drop, or how many secrets he has to keep. All those sacrifices will mean nothing, though, when Mateo’s sordid past and Tommy’s fragile future collide. In the wreckage of what used to be their love, they’ll have to decide: Who stays, and who walks away?
Warning: There will be blood. And knives and guns and…but it’s the Sinners, so nothing new there. Also includes heartbreak and heartbreaking sex. This is an Avril Ashton production. Proceed at your own risk.