Release Message:  THE TIME TUNNEL was the most important - and most secret - weapon ever developed. Now the Tunnel was threatened with destruction - and the only way Doug and Tony could save it was to take a blind leap into the whirling mists of time! Written by Murray Leinster.

Description:  The first of two novels actually based on the tv series. The front cover (of the TOP version) used part of the art of the 1964 book, but on the rear has a photograph of the Time Tunnel complex and two actors. The other version (BOTTOM) had a photo cover. Although both covers are different on the front only, both are credited as "first editions." From the back of the book... THE TIME TUNNEL was the most important - and most secret - weapon ever developed. Scientists Tony Newman and Doug Phillips knew that the destiny of the world depended on it. Now the Tunnel was threatened with destruction - and the only way Doug and Tony could save it was to take a blind leap into the whirling mists of time!