Cover art
Hood, Ken. Demon Sword. HarperPrism 1995 (cover art by Jean François Podevin).

Hood, Ken. The Years of Longdirk
Divergence: 1241 CE
What if: Ogedai Khan did not die in 1241 and the Mongols continued their advance into and conquest of Europe. Also, Christianity never grew to become a major religion and many towns rely on the benevolence of a local spirit.
Series note: Trilogy consisting of Demon Sword, Demon Rider, and Demon Knight.
Comments: Ken Hood is a pseudonym for Dave Duncan.

Hood, Ken. Demon Sword
Divergence: 1241 CE
Summary: In 1519, a young Scotsman finds himself the quarry of an English hexer, and apparently also possessed by a demon.
Series note: First volume of The Years of Longdirk.
Published: HarperPrism 1995 (0061054100).

Hood, Ken. Demon Rider
Divergence: 1241 CE
Summary: The further adventures of Longdirk in Spain, traveling through land devastated by the Fiend now ruling England and suffering visions of a future in which he will be captured by the Inquisition.
Series note: Second volume of The Years of Longdirk.
Published: HarperPrism 1997 (0061057584).

Cover art
Hood, Ken. Demon Knight. HarperPrism 1998 (cover art by Donato Giancola).

Hood, Ken. Demon Knight
Divergence: 1241 CE
Summary: While preparing for the final battle against the Fiend, Longdirk is embroiled in Florentine politics.
Series note: Third volume of The Years of Longdirk.
Published: HarperPrism 1998 (0061057592).