The Secret Panel - Dixon, Franklin W.

A chance meeting with a stranger on the road provides the Hardy brothers with a clue to a gang of local burglars.

The Secret Panel 1990, Armada, London

ISBN-13: 9780006928362

Mass-market paperback

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The Secret Panel 1975, Grosset & Dunlap

ISBN-13: 9780448189253

Trade paperback

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The Secret Panel 1946, Grosset & Dunlap, New York, NY

ISBN-13: 9780448089256

Hardcover

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