Escape from Hell(2009)

Jerry PournelleLarry Niven

Allan Carpenter escaped from hell once but remained haunted by what he saw and endured.  He has now returned, on a mission to liberate those souls unfairly tortured and confined.  Partnering with the legendary poet and suicide, Sylvia Plath, Carpenter is a modern-day Christ who intends to harrow hell and free the damned.  But now that he's returned to this Dantesque Inferno, can he ever again leave?