Carol Ericson 
In the Arms of the Enemy [EPUB ebook] 

As a lawman, he knew she had secrets. Ones that could bust his case wide open. Tasked with finding a mysterious murder suspect, DEA agent Cole Pierson was in Timberline on a mission. He didn’t need distractions like the lovely Caroline Johnson. Though he didn’t think she could be his suspect, she was clearly hiding something and her safety became Cole’s top priority.  She’d awoken next to a dead man, her memory gone. When "Caroline" had come to the small town looking for answers, she hadn’t counted on meeting Cole. He offered the protection she so desperately needed. But if he found out she’d been lying, that he’d become involved with a suspect, it would mean the end to any future—or happiness—she had imagined.  Target: Timberline