After the annoying baby twins demolish the fort Cass has built in the sitting room, she has the great idea of building a proper fort – outdoors – that can be the Bubble Street Gang's clubhouse. Lex's granny suggests the perfect spot at the back of Mr McCall's field and Cass and the gang get to work.
The gang settle in quickly and begin planning their next adventure, when they realise someone is using the clubhouse when they're not there. Stuff moves around, cookie crumbs are left behind and the door is left open. Join Cass and the Bubble Street Gang as they investigate The Clubhouse Mystery.
Erika McGann grew up in Drogheda, County Louth, and now lives in Dublin. She is the author of many books including The Demon Notebook (winner of the Waverton Good Read Children’s Award), the ‘Cass and the Bubble Street Gang’ series and Tabitha Plimtock and the Edge of the World. Her picture books include the Where Are You, Puffling? stories (illustrated by Gerry Daly) and Standing On One Leg Is Hard and What is a Peachick? (illustrated by Clive McFarland).