The Cold Smell of Sacred Stone(1988)
(The sixth book in the Mongo series)
A novel by George C Chesbro
Garth's poisoning by a mysterious substance, combined with his experiences related in "The Beasts of Valhalla, " changes his personality, causing him to become estranged from Mongo and his family--and resulting in tens of thousands of people coming to believe that he is the promised messiah.
March 1988 : USA Hardback
December 1988 : USA Paperback
August 1989 : USA Mass Market Paperback