Guardian Ranger (Harlequin Large Print Intrigue)

The Last Chance bar was Veronica Lane's last hope. Desperate to find her missing brother, the sheltered computer programmer turned to Jasper Adams--the man she'd been warned to stay far away from. Veronica knew she was putting her life into the hands of the former Army Ranger, who aroused desire she had to resist at all costs.
 
Posing as a ruthless mercenary was a cover for what Jasper was really doing: hunting a killer. And Veronica was in the line of fire.  The soldier-turned-elite-ops-agent knew he was playing a dangerous game--trying to win her trust while deceiving her about his true mission. What would happen once Veronica discovered that everything about him was a lie...everything except his passion for her?