Book 2 in the Cass and the Bubble Street Gang series! Cass and her best friends, Lex and Nicholas, are the Bubble Street Gang! They investigate crimes, solve mysteries and have brilliant adventures. They've even got their own secret clubhouse.The gang need money and quick, and they have some super-genius ideas on how to make it! Like Operation Start a Company, Make Loads of Money for Nicholas's Project and Probably Also Become Millionaires!

But Cass also has a mystery to solve. Who is the invisible boy? And why can't anyone else see him? Join Cass and the Bubble Street Gang as they start Making Millions.

This book is part of a book series called Cass And the Bubble Street Gang .

This book has been graded for interest at 8+ years.

There are 160 pages in this book. This book was published 2017 by O'Brien Press Ltd .

Erika McGann was the winner of the Waverton Goodreads Children's Prize 2014 for The Demon Notebook , the first in her magical series about Grace and her four friends.