Spring semester at the Lab School in Hyde Park finds Petra and Calder drawn into another mystery when unexplainable accidents and ghostly happenings throw a spotlight on Frank Lloyd Wright's Robie House, and it's up to the two junior sleuths to piece together the clues. Stir in the return of Calder's friend Tommy (which creates a tense triangle), H.G. Wells' Invisible Man, 3-D pentominoes, and the hunt for a coded message left behind by Wright, and the kids become tangled in a dangerous web in which life and art intermingle with death, deception and surprise.

 

 

This book is the winner of numerous awards

This book features in the following series: Thorndike Literacy Bridge, Thorndike Literacy Bridge Middle Readers .

This book is aimed at children at US 3rd grade-7th grade.

This book has been graded for interest at 9-12 years.

There are 352 pages in this book. This book was published in 2007 by Scholastic US .

Blue Balliett is the author of several bestselling, acclaimed mystery novels, including Hold Fast , Chasing Vermeer (a Book Sense Book of the Year and an Edgar Award winner), The Wright 3 , The Calder Game , and The Danger Box . She writes in the laundry room of her home in Chicago, Illinois, and you can find her online at blueballiettbooks. com. Brett Helquist is the New York Times bestselling illustrator of many books, including the Lemony Snicket books, A Series of Unfortunate Events. He lives in Brooklyn, New York.