The Magic Labyrinth (The Riverworld Series Book 4)

400pp. The answers behind the enigmatic origins of Riverworld lie at last within reach, as the remarkable gathering of Earthlings--including Sir Richard Francis Burton, Samuel Clemens, Alice Liddell Hargreaves (the real-life Alice in Wonderland), Cyrano de Bergerac, Ulysses S. Grant, and Baron Von Richtoven--finally breaches the stronghold of Riverworld's extraordinary super-race.