The Walls of Air
Barbara Hambly
Darwath (2)
Doorways in the sand
Roger Zelazny
Starhawk (A Priscilla Hutchins Novel)
Jack McDevitt
The Ruby Dice
Catherine Asaro
Skolian Empire (12)
The Threshold Child
Callie Kanno
Threshold Trilogy (1)
Legacy of the Blood
Threshold Trilogy (2)