This is one of those "doom and gloom" type of bible prophecy/conspiracy theory books. It was written before the turn of the century and hints of the "end of the world" happening at the turn of the century.
The author is a christian evangelist and seems to really have it in for the NEW AGE MOVEMENT. According to him, NEW AGERS are secretly conspiring to take over the world by propogating an ONE WORLD RELIGION. A plan that they call THE PLAN. The NEW AGERS are laying the foundation for the rule of the antichrist. And in the course of this, all christians will either be turned or killed. To me it sounds like he is beating a war drum for Christians to fight NEW AGERS. A lot of what he said borders upon lunacy, in my opinion. Now I have yet to research what Mr Marrs proclaims. But I can't subscribe to the theory that NEW AGERS have infiltrated everything including movies and television, cartoons in particular. I had to draw the line when he said the cartoons THUNDERCATS and SMURFS were riddled with satanic symbols and meanings.
This is an interesting book for the fan of bible prophecy/conspiracy theories, just to see another person's point of view. I personally don't believe any of it but I'm sure someone does.