What happened at midnight

Frank and Joe Hardy become involved in a large and dangerous conspiracy while trying to keep the valuable invention created by one of their father's clients from falling into the hands of thieves.

Grosset & Dunlap
1995
9780448089102
book
Lexile: 
690

Holdings

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239031359208952368145713207734BLE110BLE0009858F DIX100016377766271736800991
274481362356622382145713207734GMM293GMS0005003FIC DIX100016377825731736800991
282606063099762389145713207734HOE263HOE0042021FIC DIX100016377825731736800991