A Baby For Agent Colton (The Coltons of Texas, Book 6) by Jennifer Morey
"TWO FBI AGENTS. ONE SERIAL KILLER.
Jocelyn Locke can't resist her sexy boss, FBI profiler Trevor Colton. When she discovers that she's pregnant, Trevor insists they get married for the sake of the baby. But as Jocelyn begins to dream of forever, a sinister slayer haunts her nightmares.
Trevor never bargained on having real feelings for the woman he's tried so hard to resist. Especially when he's so close to having everything he ever wanted - a perfect family and a murderer behind bars. Now he'll do anything to keep the killer away from his bride and baby-to-be...