Lucius Fausto is sent to barbarian Britain, to bring back a renegade druid. What is waiting for him in the forests is an immemorial evil.When Lucius Fausto of the Legio II Augusta is sent to Britain, he expects a simple extraction mission to capture a rebellious druid. But something else is waiting under the primal forest. This is an evil against which his crack troops are powerless, an evil even the barbarian Celts worship in fear. Fausto's only ally is the enigmatic seductress, druidess, slave. Together, they stand against a threat to the Empire itself.