Book 1

The Tyranny of the Night

by Glen Cook

Published 1 June 2005

Book 2

Lord of the Silent Kingdom

by Glen Cook

Published 20 February 2007
A survivor of a battle with the Instrumentalities, the former Else Tage, now known as Piper Hecht, sets out to enlist the assistance of legendary sorcerer Cloven Februaren in the battle against the dynastic politics of the Empire.

Book 3

Surrender to the Will of the Night

by Glen Cook

Published 23 November 2010
The old evils, the Instrumentalities from the Time Before Time, have begun to ooze back into the world and Piper Hecht's sister Heris and his living ancestor Cloven Februaren, the Ninth Unknown, have made Piper part of their fight against the return of the dark god Kharoulke the Windwalker.

Book 4

Working God's Mischief

by Glen Cook

Published 11 March 2014