A former marine must help a Russian spy...but can he trust her?

Force Recon Marine Mack Balkman would do anything for Declan's Defenders and the boss who gave him a second chance. But aiding a rogue Russian spy pushes his loyalty to the limits. Beautiful, cunning Riley Lansing loves her adopted country - and her baby brother, who is being held for ransom. Can they work together to find the young boy before Riley's handler learns that she has gone rogue?