The Perfect Witness (Secure One, 2)

She's the key to the whole case.
All he has to do is keep her alive to testify.
Protecting the key witness in a high-profile trial is security expert Cal Newfellow's top priority. But keeping Marlise alive becomes a test of courage and will when they're attacked and forced into hiding. Battered but not broken, Marlise also has a mission: to put a dangerous criminal behind bars forever. That means trusting a man battling his own demons. The man sworn to help her heal...and survive.
From Harlequin Intrigue: Seek thrills. Solve crimes. Justice served.
Discover more action-packed stories in the Secure One series. All books are stand-alone with uplifting endings but were published in the following order:
Book 1: Going Rogue in Red Rye County
Book 2: The Perfect Witness
Book 3: The Red River Slayer