Prophecy novels (Heather Graham)

"Not long ago, Scott Bryant would have described himself as an ordinary guy. But one act of heroism has changed his life forever--or at least until the apocalypse occurs. Because the end of the world is on its way. Suddenly and inexplicably possessed of superhuman strength, Scott finds himself allied with the enigmatic and alluring Melanie Regan in a quest to find the mysterious Oracle in hopes of averting the absolute destruction that threatens....