The book begins when Alan Borman, a successful attorney, sees a body lying face down in the street with three bullet holes in the back. A detective, Lefkowitz, remarks that the scene isn't quite right -- the man's Lexus still has the keys in it, his wallet is still in his back pocket. Then the EMS arrives and the techs turn the body face up to place it onto a stretcher. Borman turns pale. "Do you know the guy?" Lefkowitz asks. "Yeah, it's me," Borman replies.
From there, we are transported to what we assume is heaven. Or some version of it. Long white corridors. Physical reality that seems to shift with our thoughts.
The novel then deals with Borman's attempt to solve his own murder from the other side.
If this book doesn't force you to actually say, "Hmmmm" then you have no pulse and should see a doctor immediately. One of my favorite books of all-time.