On the List - CLUB UNDERCOVER, #4

No cover charged... no ID required... safety guaranteed... Agent Renata Fox knew the Feds killed the wrong person they believed to be the cold-blooded Chicago Sniper, but her persistence angers her S. A. F. E. co-workers, who think she's trying to make them look bad. The real killer is now determined to silence her, and the only man she can turn to is Gabriel Connor. Gabe has his own dark reason for wanting to track down the sniper.
He befriends Renata and involves Team Undercover despite her objections. Renata knows she can trust Gabe with her life and heart, but why did this mysterious stranger force her to accept his help?