The O’Brien Press

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.

‘captures the spirit of The Secret Seven in this good-natured mystery for young readers’ Irish Independent

Get all four books in the series at a great price.

Erika McGann grew up in Drogheda, County Louth, and now lives in Dublin. She is the author of a number of children’s books, including the winner of the Waverton Good Read Children’s Prize 2014, The Demon Notebook, the first in her magical series about Grace and her four friends. Other books in the series are: The Broken Spell, The Watching Wood and The Midnight Carnival. She is also the author of the ‘Cass and the Bubble Street Gang’ series.