The Hades Project — Justin Gustainis

A group of scientists found just such a door, and got a lot more than they bargained for -- but none of them lived to tell the tale.

Federal agent Michael Pacilio, assigned to investigate their murders, finds himself following a trail of corpses left by a demonic killer with a grisly sense of humor and a terrifying master plan.

Can Pacilio stop him ... before all Hell breaks loose?