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The Ogre Downstairs (original 1974; edition 2003)
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Amazon.com Product Description (ISBN 0064473503, Paperback)Chemical Warfare?
Casper, Johnny, and Gwinny are sure they'll never be happy again when their mother marries Jack, who is as mean as an ogre. To make matters worse, two obnoxious stepbrothers, Malcolm and Douglas, move in as well. No one -- except the parents -- seems happy. But when Jack gives a chemistry set to each group of kids, bigger problems take over. These are, it turns out, not your average chemicals. In one hilarious experiment after another, the kids discover they can fly, switch bodies with one another, and even disappear. If only they could figure out how to undo all of this! Are one combustible stepfamily and two explosive chemistry sets a formula for disaster?
(retrieved from Amazon Mon, 30 Sep 2013 13:26:38 -0400)
When a disagreeable man with two boys marries a widow with three children, family adjustments are complicated by two magic chemistry sets which cause strange things to happen around the house.
(summary from another edition)
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