Bone Guard Adventures, books 1-3

What if Indiana Jones had served in special forces? Travel the world punching Nazis and preserving cultural treasures! Veteran heroes take on the bad guys and uncover the secrets of history. The Bone Guard adventures--so far! This three volume set includes: The Mongol's Coffin, The Nazi Skull, and The Assassin's Throne! Plus a bonus short story, The Chief's Boss--and an exclusive teaser from book 4, The Maya Bust! The Bone Guard. . .where adventure and history ignite.