Fair Condition – vintage book with noticeable cover, spine and edge wear and heavy page tanning and spotting.
Uncle Quentin needs peace and secrecy for an important experiment, so Kirrin Island seems like the perfect place to work. But suspicious visitors, unusual lights and a hidden underground passage convince the Famous Five that danger is closer than anyone realises. Julian, Dick, George, Anne and Timmy investigate despite warnings to stay away. Enid Blyton combines secret tunnels, scientific intrigue and island adventure in a classic mystery where the Five must act quickly to protect both their family and Kirrin Island.
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