Edward William Fudge 
Fire That Consumes [PDF ebook] 
A Biblical and Historical Study of the Doctrine of Final Punishment

While carefully examining the complete teaching of Scripture on the subject of Final Punishment, Fudge defends the view that the destiny of the unsaved will be final destruction, rather than eternal conscious torment in hell as defended by the traditional view. The 3rd edition of this meticulous and compelling book takes a close look at the traditionalist critics, and brings an overview of developments in the last thirty years.