Leonora Bolt Secret Inventor Series (Book 1-4) by Lucy Brandt: Illustrated 4 Books Collection Set - Ages 6-10 - Paperback

Penguin Random House

Leonora Bolt Secret Inventor Series (Book 1-4) by Lucy Brandt: Illustrated 4 Books Collection Set - Ages 6-10 - Paperback

Reviewed byUpdated 2 Jun 2026

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Titles in this Set: 1. Secret Inventor (Book 1) 2. Deep Sea Calamity (Book 2) 3. Eco Engineer (Book 3) 4. The Great Gadget Games (Book 4) Description: Secret Inventor (Book 1) Orphaned Leonora lives on a remote island, spending her days making crazy cool inventions. When a strange boy called Jack washes up on an inflatable lobster and reveals that her evil Uncle Luther has been stealing her inventions and selling them on the mainland, it begins a bonkers and brilliant adventure - complete with a furry otter, a singing sea captain, and a very secret society... Deep Sea Calamity (Book 2) Leonora isn't supposed to be building a submarine in a tree. Or turning the local wildlife luminous. In fact, she is supposed to be keeping her head down and drawing no attention - because Leonora Bolt is an inventor in secret. But she can't stop thinking of the clues she found to her missing parents' location. So, deep in hiding in Snorebury, desperately trying to avoid being discovered by her evil uncle, Leonora is hatching a plan. So what if involves launching a homemade submarine into the middle of the ocean, accompanied only by a couple of friends and an otter with particularly sensitive whiskers? For when disaster strikes, Leonora's wackiest plan might just be her most brilliant yet... Eco Engineer (Book 3) Leonora Bolt makes amazing gadgets from any old junk. And her inventions have already stopped villainous Uncle Luther TWICE, though she hasn't rescued her super-scientist parents from him - yet. Leonora and her pals find clues that lead them to Luther's latest evil plan. It's an amusement park called Brightworld built in a desert, under a massive snow globe - and it's terrible for the environment! But when all their fancy-pants gadgets fail in the hot-hot heat, it's down to Leonora to use her eco-engineering imagination. Can she invent something to shut down Brightworld and save her parents - before there's a meltdown? With nothing but courage and Leonora's trusty tool belt to hand, the gang must battle swirling sandstorms, navigate plunging canyons and finish Uncle Luther...FOD GOOD! The Great Gadget Games (Book 4) The fourth hilarious book in the brilliant STEM adventure series Leonora Bolt. With glorious illustrations by Gladys Jose throughout. It's Leonora first ever Christmas on Crabby Island! Among homemade presents made out of recycled junk and boiled cabbage candy canes, she finds a mysterious invitation to a new, global invention competition: The Great Gadget Games. The ho-ho-host is her evil Uncle Luther, and the judges are Harry and Eliza Bolt. . .Leonora's kidnapped parents! Leonora HAS to enter and WIN the competition - it's got to be her best ever chance to finally rescue mum and dad, and foil Luther's schemes once and for all! All she needs is her imagination, a foolproof disguise, and help from some fellow young inventors. Violet Baudelaire meets Peanut Jones in this epic STEM-themed adventure about believing in your brainpower - and yourself.

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