Her Last Chance by Toni Anderson

Marsh & Josie first appear in HER SANCTUARY. This is their story

Eighteen years ago the Blade Hunter found his first victim on the streets of New York City.
As a child Josephine Maxwell was attacked and left for dead. She learned the hard way that life is a constant struggle for survival. She can’t waste time pining over a man she can’t have. Now the killer has returned, and the only person who can save her is the FBI agent she deceived and betrayed six months ago.
Now he’s back to finish the job.
Special Agent-in-Charge Marshall Hayes has made it his life’s work to fight on the side of law and order, even though it cost him the only woman he ever loved. The return of a serial killer gives him the excuse he needs to force his way back into her life. But in order to catch the killer and safeguard Josie’s life, he has to break all the rules and risk losing his heart again.