The smuggling of drugs and weapons... and a murder. Everything points to a mole in the Tombstone customs office. But when agent Gage Engler goes undercover to investigate, he's shocked to find that Jill Manning, the new customs station chief, tops the list of suspects.

No one knows that he and Jill were once married, that Jill is the woman he still loves. Or that she holds him responsible for the death of their infant son. The last thing Gage wants is to cause Jill more pain. But his gut says she's a target... not a traitor.

A target he's determined to protect...