Lord of Samarcand

The Turks, cruelly lead by the scurrilous Bayazid, crushingly defeat a bunch of European Christians who were invading so as to steal land from the Turks, or something. But one of the Europeans, a Scott, Donald MacDeesa escapes with his life and hooks up with Ak Boga, who who had secretly been spying on the carnage. Ak Boga works for the Amir of Samarcand, one Timour the Lame.