The secret of the underground room

When Father Higgins disappears, Johnny Dixon and Professor Childermass discover disturbing clues which lead them to England and an encounter with a long-dead knight.

Puffin Books
1992
9780140349320
book
Lexile: 
860

Holdings

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215516157132202465206094304260HIWA258HIWA000505FIC BEL100015825759371742569409
262526361256812370206094304260CAE127CAE0007645F BEL100016377825731736800991
274430262351802382206094304260GMM293GMS0004489FIC BEL100016377825731736800991