You have to stop this

When a mummy disappears from the local history museum while Cass and her friends Max-Ernest and Yo-Yoji are there, they try to solve the case in order to clear their names and, they hope, discover the Secret they have been seeking.

Little, Brown
2012
9780316076272
book
Lexile: 
770

Holdings

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9243234646161233221622451123RHCR402RHCR026446FIC BOS100015802161721736518457
9616764680335233821622451123RHVO406RHVO036898FIC BOS100015802161721736518457
11234914809568230021622451123EILP163EILP18418F BOS100015802161721736518457
14139315060780233621622451123RHRO407RHJH054461FIC BOS100015814652241736518457
16811355295837224521622451123WCES509027033278FIC ADV BOS100015825759371709307855
20178625597565245621622451123GROH243GROH038687SERIES FIC BOS100015825759371742569409
21341165695544246421622451123HIVE259HIVE803094FIC FANTASY BOS100015825759371742569409
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24434635966495241521622451123RCE390RCE0023584FIC BOS100016377825731736800991
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28670706347515239321622451123MAE295MAE0024044F BOS100016377825731736800991
29928936456250240721622451123PCE301PCC0031115Fic Bos100016377825731736800991
37187547040043230921622451123FAMB177FAMB204082FIC BOS100016927942501736518457
38061817117754242621622451123VCJ433VCJ00219559F BOS100016950443851736800991
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