Punished VIII: Decadence by Kimberly Zant

Caitlyn knew Bubba--the man she'd married seeking financial security for herself and her two boys--was a bad man. She'd learned that in the years she'd spent with him. She just didn't know how bad he was until she'd managed to 'escape' him--well run. She didn't actually manage to escape him until the FEDs picked her up to use as bait to topple his illegal operations.

And for just a little bit, there, after her new boss, Javier, settled her into his mansion, she thought she'd just leapt from the frying pan and into the fire. Because the new men in her life--Javier, Jesse, and Kane--seemed to be at least as bad as Bubba. At least as scary. But then again, it stood to reason that it would take bad asses to take out bad asses.

And they were pretty dedicated to convincing her of which side she wanted to be on when the music stopped.