Guarding The Witness by Margaret Daley

After two months of protective custody, bodyguard Arianna Jackson is days away from testifying at a murder trial when the unthinkable happens. Her Alaska safe house is attacked, and Arianna is forced to go on the run with U.S. Marshal Brody Callahan.

Arianna is used to issuing orders, not taking them, but now, out in the wild, with a bounty on her head and a killer on her heels, she has only one hope of making it to testify–the handsome protector at her side.