Two murderous Celtic goddesses... a journeyman druid on the run... and a sealed grimoire that holds the key to his survival. Can Colin unlock it in time to save the people he loves?

Colin McCool here, junkyard druid and trouble magnet extraordinaire. 

Recently, I fought the giant king of Jotunheim in a bid to save my druid master's life. I failed in that task—now it's up to me to keep druidry alive.

Problem