Colton K-9 Bodyguard by Lara Lacombe

This protector broke her heart and is back to save her.

K–9 officer Micah Shaw never thought tracking a serial killer would lead him to discover the woman he once loved on the brink of death. Vulnerable and under siege, Bea Colton needs him now more than ever. Their relationship didn't succeed years ago, but their second–chance attraction is an all–too–deadly distraction: one that could kill!