The Iron Druid Chronicles - 4.5 - Two Ravens and One Crow (audiobook)

Six years into the training of his beautiful apprentice, Granuaile, a large crow swoops down and transforms into none other than the Morrigan, a goddess who insists that Atticus come with her at once. He must leave his apprentice behind, along with his Irish wolfhound, Oberon—and he must also leave his sword. The Morrigan has always taken extreme pleasure in pronouncing the Druid’s mortal danger and imminent doom, so the fact that she won’t reveal the purpose of their journey makes him very nervous. Of course, any time the Celtic Chooser of the Slain drops in unannounced, it’s never good. When she does let slip that she’ll be saving his life in the near future, Atticus is left to wonder . . . will he soon be giving his legions of enemies something to crow about?