Going Deep by Silvia Violet

Gray, Jack, and Mason’s story continues…
Gray ‘s feelings for his partners run deeper than he ever thought possible. He’s learned to be romantic at home, but at work, he’s still a big tough cop nobody wants to cross.
He’s assigned to solve the murders of several young women, but after days with no suspects and no motive, his confidence takes a hit. Every dead end, every day that goes by, adds to the urgency he feels to find the killer.
Gray desperately needs a break. He excels at taking care of his men, in bed and out, but when it comes to accepting comfort in return, he shuts down.