And the Devil Will Drag You Under by Jack L. Chalker https://www.goodreads.com/book/show/584395.And_the_Devil_Will_Drag_You_Under https://www.goodreads.com/boo

And the Devil Will Drag You Under by Jack L. Chalker https://www.goodreads.com/book/show/584395.And_the_Devil_Will_Drag_You_Under https://www.goodreads.com/book/show/584395.And_the_Devil_Wil... https://en.wikipedia.org/wiki/And_the_Devil_Will_Drag_You_Under https://en.wikipedia.org/wiki/And_the_Devil_Will_Drag_You_Un... > In the year 2079, a human attempt to mine a nearby asteroid instead results in the asteroid being directed towards Earth. As catastrophic natural disasters envelop the world, Mac Walters and Jill McCulloch find themselves in Reno, Nevada. Entering a nearby bar, they encounter a demon named Asmodeus Mogart, who tells them that Earth is but one of thousands of universes set up by the mysterious Department of Probabilities, and that he can save the world if he can gather six magic jewels.