The fourth book in the 6-gamebook Dragon Warriors series came to be known as "Book 4" and was released a year or so after the initial 3 gamebooks.

Title:	"Out of the Shadows"
Author:	Dave Morris
Illustrator:	Bob Harvey and Leo Hartas
Published:	1986
Publisher:	Corgi Books, a division of Transworld Publishers Ltd
ISBN:	0-552-52333-X
Pages:	252
Subject Matter:	Introduced the new Assassin profession, and Stealth & Perception rules. Added tougher monsters and scenarios.
Scenarios:	"The One-Eyed God"; "Sins of the Fathers"; "The Greatest Prize"

Note: Cover art by Alan Craddock.