Harley Hitch 4 Book Set by Vashti Hardy The Iron Forest, The Missing Moon & more

This four-book set brings together inventive adventures featuring Harley Hitch, her robot dog Sprocket and her best friend Cosmo. Set in Inventia, a world where science rules and technology grows in the forest, the stories follow Harley as she tackles mysteries and experiments that turn everyday school life into a series of fast-moving challenges.

Across the collection, Harley faces an unusual infestation in the Iron Forest, a cabinet that makes things disappear, a puzzling fossil discovery on a school trip, and a summer Aviation Parade where she plans to unveil a flying machine. Each instalment centres on problem-solving in a setting filled with runaway robots, unexpected discoveries and inventions with surprising consequences.

Included titles

• Harley Hitch and the Iron Forest
• Harley Hitch and the Missing Moon
• Harley Hitch and the Fossil Mystery
• Harley Hitch Takes Flight

Key details

• Four-book set
• By Vashti Hardy
• Series follows Harley Hitch, Sprocket and Cosmo
• Set in Inventia, where science and technology shape daily life

Synopses

Harley Hitch and the Iron Forest

The Iron Forest near Harley’s home grows cogs, hinges and other mechanical parts, and Inventia depends on it. When a strange fungus appears, Harley races to find an answer as the town begins to fall apart without essential components. Someone, or something, seems to be behind the spreading infestation.

Harley Hitch and the Missing Moon

When the circus arrives, Harley’s curiosity leads to a mishap involving a cabinet that makes things disappear. Soon after, the Moon goes missing and the effects are felt across the world, from speeding time to stronger winds and the loss of tides. Harley must work out what happened and whether she is responsible.

Harley Hitch and the Fossil Mystery

On a school trip to the Inventia Jurassic Coast, Harley finds an unusual fossil and believes it could be a new dinosaur species. With Fenelda unconvinced, Harley decides to build a time machine to prove her discovery and win the ‘best invention’ competition. Interfering with time brings unexpected, dinosaur-sized consequences.

Harley Hitch Takes Flight

With the Aviation Parade coming to Forgetown, Harley plans a flying machine designed to stand out: a robot hippogriff. She keeps the project secret, hoping to surprise everyone and impress Cosmo’s mum. Trouble follows when real hippogriffs arrive and chaos breaks out.