Transported back to the Prehistoric times, a B.P.R.D. agent finds himself among a tribe of cavemen locked in battle with a group of monsters and the evil god they worship.

* From the pages of Hellboy!

* Written by Mike Mignola!

“A spectrum between Mike Allred’s razor-sharp line work and Jeff Lemire’s fleshy faces, illustrator James Harren has carved out a style that Paul Pope fans should be able to appreciate.” —Comics Alliance