Darran Stobbart (Author) Darran spent a decade as children's bookseller in Durham. They studied crime scene and forensic science at university. It's handier than you'd expect. They collect useless facts, and write about lots of subjects - especially science. They are passionate about stories, music, and will talk about octopuses at great length.Micaela Tapsell (Author) Originally from Zimbabwe, Micaela has always enjoyed learning about different cultures and exploring the great outdoors. When she's not rafting the rapids of the Zambezi river or camping among the African wildlife, she is writing books on all sorts of delightful subjects, from science's greatest unknowns to the wildflowers of the world.

• Chapters in this book include:- Welcome to Brain Stretchers- Cracking the vault- Monster medicine- Lost and found- Try and try again- The wizard's hat- Fake unicorns- Time machine- Undercover agent- Naughty gnomes- Ogres' tea party- Memory palaces- A quest to remember- Spotting stars- Pixie prank- Troll dodge- Robo-factory- Treasure hunt- The power of sleep- Star Academy- Haunted house- Tiny Tapas- Hatching dragons- Remember, remember- Answers