The Glass of Dyskornis by Randall Garrett and Vicki Ann Heydron
Bantam Books, 1982
Price I paid: $1.25
For Ricardo Carillo, taking over the life of the swordsman Markasset on the desert world of Gandalara had its compensations: a strong, young body, a beautiful fiancee, and a mighty telepathic war-cat named Keeshah, who obeyed his every command. It also had its problems. Markasset had many enemies, and one was out for blood. So Ricardo and Keeshah left Raithskar to join the Sharith—the warrior brotherhood of sha’um cat-riders. But trouble followed, and he soon found himself in the company of a jealous lieutenant and a lovely but treacherous illusionist, on the track of a murderer who had stolen Gandalara’s most precious jewel.