While undergoing "Tiersian" therapy, Jim physically goes to the World of Tiers, experiencing exciting and disturbing adventures and occupying the fantastic mind

Sent into the world of Tiers by a well-meaning doctor in the mental hospital where he is incarcerated, teenage troublemaker Jim Grimson finds himself in a world

From a multiple Hugo Award winner: Four more novels in a brilliantly imaginative series. In the second half of the World of Tiers series, Kickaha embarks on a j