Ten-year-old Michael Wilson notices that strange things are happening at old Mrs Vernon's house, just two down from his Shaker Street home.

Crates are going in and out of the house all night long, and Mrs Vernon, a curator at an art museum, has wet paint in her garden of all places.

Can Michael and his friends Liv and Leo put their maker skills to work and create some gadgets to figure out what the odd old woman is up to?

After the mystery's solved, readers can re-create the Mysterious Makers' tools with included instructions, and a glossary, discussion questions and writing prompts offer reading support.