Gods of Riverworld by Philip Jose Farmer 1983 BCE HCDJ VERY GOOD

The fifth installment of the Riverworld series--which features a ten-million-mile-long river and the resurrection of Earth's 35 billion dead. Again the resurrected heroes include explorer Richard Burton, Alice (of Wonderland fame), sf writer Peter Jairus Frigate & Chinese poet Li Po. They have now occupied the tower of the Ethicals (the mysterious, puissant beings who set the whole system up), with its computer & miraculous powers. The renegade Loga, having murdered the other Ethicals, is directing things to private ends....