4899605
9780060234072
"Second-grader Brian and his sister Penny, a kindergartner who he calls Pea Brain, [try] to discover who is undermining School Spirit Week. Readers will have a good chance of solving this mystery, which features...the lively, but fundamentally good-natured, rivalry between Brian and Penny."-H.Levy, Elizabeth is the author of 'School Spirit Sabotage' with ISBN 9780060234072 and ISBN 0060234075.
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