For nearly two thousand years, only one Druid has walked the Earth—Atticus O’Sullivan, the Iron Druid, whose sharp wit and sharp sword have kept him alive as he’s been pursued by a pantheon of hostile deities. Now he’s got company.

Cutting a deal with a trickster god rarely goes well for any human brave or foolish enough to try it, but Atticus doesn’t feel like he has a choice. With members of the Norse pantheon out for his blood, he can’t train his apprentice in peace, so he asks Coyote to help him fake his own death. The cost, however, might wind up being every bit as high as if he’d made no deal at all.

The downside to faking your own death is that people tend to get upset when they find out they’ve been had. In Atticus O’Sullivan’s case, they’re upset enough to come after him to make sure he dies for real this time. Yet he can’t remain in hiding anymore: He has to bind his apprentice, Granuaile, to the earth so that she can become the first new Druid in centuries.

Unchained from fate, the Norse gods Loki and Hel are ready to unleash Ragnarok, a.k.a. the Apocalypse, upon the earth. They’ve made allies on the darker side of many pantheons, and there’s a globe-spanning battle brewing that ancient Druid Atticus O’Sullivan will be hardpressed to survive, much less win.

Thor, the Norse god of thunder, is worse than a blowhard and a bully - he’s ruined countless lives and killed scores of innocents. After centuries, Viking vampire Leif Helgarson is ready to get his vengeance, and he’s asked his friend Atticus O’Sullivan, the last of the Druids, to help take down this Norse nightmare.

In ancient Egypt, Atticus agrees to raid a secret chamber underneath the library of Alexandria, dodging deadly traps, only to learn that on-site security includes two members of the Egyptian pantheon.

Thanks to his relationship with the ancient Druid Atticus O'Sullivan, Oberon the Irish wolfhound knows trouble when he smells it - and furthermore, he knows he can handle it. When he discovers that a prizewinning poodle has been abducted in Eugene, Oregon, he learns that it's part of a rash of hound abductions all over the Pacific Northwest. Since the police aren't too worried about dogs they assume have run away, Oberon knows it's up to him to track down those hounds and reunite them with their humans. For justice! And gravy!

Atticus O’Sullivan, last of the Druids, lives peacefully in Arizona, running an occult bookshop and shape-shifting in his spare time to hunt with his Irish wolfhound. His neighbors and customers think that this handsome, tattooed Irish dude is about twenty-one years old - when in actuality, he’s twenty-one centuries old. Not to mention: He draws his power from the earth, possesses a sharp wit, and wields an even sharper magical sword known as Fragarach, the Answerer. Unfortunately, a very angry Celtic god wants that sword, and he’s hounded Atticus for centuries....

Atticus O’Sullivan, last of the Druids, doesn’t care much for witches. Still, he’s about to make nice with the local coven by signing a mutually beneficial nonaggression treaty - when suddenly the witch population in modern-day Tempe, Arizona, quadruples overnight. And the new girls are not just bad, they’re badasses with a dark history on the German side of World War II.

When he’s not vanquishing villainous gods or dodging demons, 2,000-year-old Druid Atticus O’Sullivan can be found behind the counter of Third Eye Books and Herbs in modern-day Tempe, Arizona, literally minding his own business. But when an evil sorcerer - and amateur shoplifter - snatches an ancient Egyptian tome of black magic, The Grimoire of the Lamb, Atticus is not sheepish about pursuing him to the ends of the earth...or at least to the Land of the Pharaohs.