What Dreams May Come is a 1978 novel by Richard Matheson. The plot centers on Chris, a man who dies then goes to Heaven, but descends into Hell to rescue his wife. It was adapted in 1998 into the Academy Award-winning film What Dreams May Come starring Robin Williams, Cuba Gooding, Jr., and Annabella Sciorra.
https://en.m.wikipedia.org/wiki/What_Dreams_May_Come