Double Take, Softcover, #1

Detective James Holton has been honorably discharged from the Army Criminal Investigation Division due to wounds sustained when an IED blew up near him. Now with the Lake City Police Department, he's rooming with this good buddy and partner, Cole, while he figures out his family dynamics.
Physician Assistant Lainie Jackson is eighteen months out from an attempted murder perpetrated by her ex, which ended when she managed to grab the weapon and shoot him. When he appears to have survived and is back to finish the job he started, Lainie insists it's not possible. But someone keeps trying to kill her, and she keeps seeing his face.
Together, Lainie and James must work together to find out who, exactly, is after her and why he wants her dead. And failure is not an option.