The Olivia Sharp, Agent for Secrets book series by Marjorie Weinman Sharmat & Mitchell Sharmat includes books The Pizza Monster (Olivia Sharp Agent for Secrets), The Princess of the Fillmore Street School (Olivia Sharp Agent for Secrets), The Sly Spy (Olivia Sharp Agent for Secrets), and several more. See the complete Olivia Sharp, Agent for Secrets series book list in order, box sets or omnibus editions, and companion titles.
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