The Endless Night (Cult of the Endless Night, #6)

The ultimate evil lurks below...Ghost hunter and retired Marine, Shane Ryan, is on a mission. One by one, he has faced the ringleaders of the Endless Night. Now, the trail of carnage has led to Devil Rock... A hidden vault, buried deep within the bowels of the earth.A terrible secret lurks within the dark shadows of this abandoned facility. But to reveal the depth of the cult's evil machinations, Shane must face an army of deadly spirits, each more powerful than the last. And to fight these diabolical wraiths, even Shane Ryan will need a little help.Calling on a trusted ally, Shane soon discovers that the underground base is home to the cult's founder, a paranormal entity who is far more than meets the eye. And unless Shane can solve the riddle of Devil Rock, a terrifying destructive force will be unleashed.But the worst part is, Shane himself may be the one who triggers humanity's annihilation...