The 11th Book in this bestselling series, which has now sold more than 120 million copies worldwide.
With Halloween just around the corner, can Greg get his mum back for taking away his video games? A packet of gummy worms gives him a mischievous idea, but will he become rich and famous in the process or create more trouble for himself?.
The 11th Book in this bestselling series, which has now sold more than 120 million copies worldwide