Book excerpt: 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