It's not fair. Kim's always lived in the shadow of his younger sister, Eila - which is not how it's supposed to be. Eila is a prodigy, and everyone talks about how smart she is but, in Kim's eyes, she has no common sense.

One day Kim and Eila are walking in the woods, and Eila finds an enigmatic, otherworldly object. Kim thinks it's bad news . . . but Eila begins to commune with it. Kim has every reason to be worried, because soon Eila is able to control the minds of everyone around her - in ways she says is the best for everyone.

Kim needs to put his problem-solving mind to the ultimate test. How can he save his sister, and also save the world from the thing his sister has become and the forces she has unleashed?

Garth Nix was born in Melbourne and now lives in Sydney, Australia. A full-time writer since 2001, he has worked as a literary agent, marketing consultant, book editor, book publicist, book sales representative, bookseller, and as a part-time soldier in the Australian Army Reserve.

The activity pack includes stickers, book club-style questions to ponder and a welcome note from Garth Nix. There’s also a weather-inspired crossword to solve and instructions for making a 20-sided die, alongside jokes and further reading recommendations.

Activity packs are a handy A5 size and printed on uncoated paper which is fully recyclable.

We dispatch orders Monday - Friday.

• Standard UK Royal Mail delivery £2.99 (free on orders over £25)
• UK Express delivery also available from £5.50
• International shipping available to select destinations (calculated at checkout according to weight)

Our packs are wrapped in a simple paper sleeve and sent out in a cardboard book wrap – we would be so grateful if you could recycle both.

More information on shipping

We don't include any paperwork in our parcels so you can send our book gifts directly to the recipient with confidence.

We'll happily add a handwritten note to your order. Simply leave your message in the box on the cart page.

This pack is also available as part of a gift set:

Our gift set collection

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We are a monthly book subscription by post for children aged 5 to 14, focused on helping families discover new and different chapter books.

This title was sent to subscribers in the Macaw reading group, aged roughly 12 to 14, who need books that feel grown-up but aren’t quite ready for all young adult books.