Britannia: Lost Eagles of Rome #2

Three Roman legions lay slaughtered, and, with them, a cache of Rome's most prized possessions has disappeared... The mystery of the Roman Empire's missing relics deepens into a deadly new case for Antonius Axia, history's first detective and the ancient world's sole possessor of the secrets of deduction and psychology. Now, Axia is on the hunt to recover the empire's treasure by any means...and the trail is about to lead him directly into the mystical kingdom of Egypt!