Freeing Hawk by Kendra Mei Chailyn

A missing partner, a broken teenager, and a Mexican cartel boss who just wants them to hurt…

Sasha “Hawk” Bracken’s partner goes missing on a case no one knew he was working. Very early on, Sasha knows she must unravel the mystery—and fast. Not only is his life in danger, but he has a very pregnant wife at home. Knowing she can’t trust anyone at her precinct and that she can’t do it alone, she reaches out for help and gets it, in the form of the immovable force that is Angel James.
Former Army Ranger, Angel James is home on leave. All he wants is some well-needed R& R with his Doberman and the people he cares about while running his new business. When he’s asked to help Hawk, he jumps at the request. But he never expects the goddess that was Hawk or how far she would go to protect those she loves.
He can respect that.

Then his heart gets involved
—what fresh hell is about to be unleashed?