The Riddle Other Books in This Series

Blood Relics Blood Relics
Blood Relics
2016
Sins of the Titanic Sins of the Titanic
Sins of the Titanic
2016
Saint Peter's Soldiers Saint Peter's Soldiers
Saint Peter's Soldiers
2016
The Thirteenth Legion The Thirteenth Legion
The Thirteenth Legion
2016
Raging Sun Raging Sun
Raging Sun
2016
Wages of Sin Wages of Sin
Wages of Sin
2016
Wrath of the Gods Wrath of the Gods
Wrath of the Gods
2017
The Templar's Revenge The Templar's Revenge
The Templar's Revenge
2017
The Nazi's Engineer The Nazi's Engineer
The Nazi's Engineer
2017
Atlantis Lost Atlantis Lost
Atlantis Lost
2018
The Cylon Curse The Cylon Curse
The Cylon Curse
2018
The Viking Deception The Viking Deception
The Viking Deception
2018
Keepers of the Lost Ark Keepers of the Lost Ark
Keepers of the Lost Ark
2019
The Tomb of Genghis Khan The Tomb of Genghis Khan
The Tomb of Genghis Khan
2019
The Manila Deception The Manila Deception
The Manila Deception
2019