The Zap gives... and the Zap takes away. Because of the very nature of the Zap -- the big thermonuclear bomb that had scrambled and rearranged the neurons of everyone's brains -- there was no way of telling what it had taken from them all. The past was a jumbled mass of tantalizing glimpses and agonizing blanks. But the Zap's gifts were many and varied.
The Readers got the rare and often dangerous ability to make sense of the writings of the past...
The Memors got perfect recall -- of everything they'd heard since the Zap...
The Bush Punks got a chance to live free and easy -- and die the same way...
The God Weirders got religion -- if you could call it that...
The Blimpers got a purpose -- a purpose that could save them, or destroy them all.
Now Holmes, a Reader, was in the perfect position to tip the scales for or against survival -- if only he could figure out which side was which.