Book 1 in the New York Times bestselling

series, soon to be a TV show on Disney+!

'This book reminded me of some of the children’s books

I grew up with, like Charlie and the Chocolate Factory and The

Phantom Tollbooth.' 

class="caps">RICK RIORDAN, author of the 

class="caps">PERCY JACKSON series

'Like the Potter books, this story goes beyond mere

adventure' BOOKLIST

When a peculiar

advertisement appears in the newspaper for children to take

part in a secret mission, children everywhere sit a series of mysterious

tests.

In the end, just four children succeed: Reynie, Kate, Sticky and

Constance. They have three things in common: they are all honest,

all remarkably talented and all orphans.

They must go undercover at the Learning Institute for the Very

Enlightened where the only rule is that there are no rules. There

they must work as a team to save not only themselves, but also

the world outside the walls ... 

• Book 1 in the 4-book New York Times bestselling

  adventure series – ideal for children aged 10 and up

• Join a group of smart and resourceful junior sleuths

  as they solve a series of page-turning puzzles and mysteries

• Perfect for fans of Robin Stevens's MURDER MOST UNLADYLIKE

  series

• The adventure continues in book 2, THE MYSTERIOUS BENEDICT

  SOCIETY AND THE PERILOUS JOURNEY

When an advert appears in the newspaper for children to take

part in a secret mission, children everywhere sit a series of odd

tests. In the end, just Reynie, Kate, Sticky and Constance succeed.

They have three things in common: they are honest, talented

and orphans. They must go undercover - the fate of the world is

at stake ...