Rule of Two

From Author Wars - https://authorwars.com/publications/rule-of-two-296463.html

Overview:

Title: Rule of Two
Author: Drew Karpyshyn
Year: 2008
Publisher: Del Rey / Ballantine / SFBC
Price: $14.99
Pages: xvi+318
Binding: Hardcover
Type: Novel
Title Reference: Rule of Two
Notes:
SFBC catalog #22-8123 Info from a later SFBC catalog. Month of publication unknown, but no earlier than January 2008.