When Stephanie Lewis finds secret writing in the margin of an old book in the library, The Math Kids have a new puzzle to solve. But first, they'll have to learn about codes and ciphers and how they can use their math skills to solve them.As one clue leads to another, the kids are drawn into the mysterious old house that overlooks the town. Is it really haunted like some of the townspeople say? And who is the man in the long beard who keeps showing up everywhere they go?But that's not their only problem. The town they live in is broke. Unless they can find a solution, the math competition they've been training so hard for will be cancelled. Jordan, Stephanie, Justin, and Catherine will need to use all their problem-solving skills to figure out the clues before it's too late. show more

Binding: Paperback;184 pages; Publisher: Common Deer Press; Classification: Children?s / Teenage fiction and true stories; Weight: 316 g; Dimensions: 139 x 216 x 13

Something not quite right? You have 28 days from the day you receive it, to send something back.

Please note, we cannot offer refunds on fashion face masks, cosmetics, pierced jewellery, adult toys, and swimwear or lingerie if the hygiene seal is not in place or has been broken.

Items of footwear and/or clothing must be unworn and unwashed with the original labels attached. Also, footwear must be tried on indoors. Items of homeware including bedlinen, mattresses, and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights.

Click here to view our full Returns Policy.