Bond

This has to be one of the weirdest relationships on the books.

Deena Rae is a loner-a strong, cocky, independent woman who needs nobody. There is the possible exception of Mr. Fine Ass, with whom she's begun a strange courtship. He's certainly a nice diversion from her new job with Pierce Securities and her first solo gig with the company.
Slade is in debt to a man nobody wants to owe, his sperm donor just died, and somehow, Deena Rae knows the half-brother Slade's never met. He can't keep his eyes off his gorgeous bitch of a neighbor who keeps her drapes open, even when she's "entertaining." He's told her, though, he's a train wreck and they shouldn't get involved.

Deena Rae is riding Slade's train all the way to the end, whether she likes it or not. Slade is working for her mark, and her mark suddenly wants her dead.
And Slade's the man who's got to do it.