Release Message:  The experimental nuclear missile was sent through the Time Tunnel - but something went wrong, and it wound up buried in the capital of a great nation, over a century ago! Written by Murray Leinster.

Description:  The last novel based on the tv series. The front & back covers feature photos from the series. From the back of the book... TIME BOMB The experimental nuclear missile was sent through the Time Tunnel - but something went wrong, and it wound up buried in the capital of a great nation, over a century ago! Now, excavation equipment was moving toward the site - any day a bulldozer blade might set it off, destroying a mighty city and plunging the world into war! Time travelers Tony Newman and Doug Phillips had only one chance to head off disaster - to go through the Time Tunnel and make the accident "unhappen." The trouble was, there was a war on in the past - and the bomb was in enemy territory...