Best friends Georgie & Jem aren't just new at school; they're new at being full-time sisters too Georgie's mum & Jem's dad have finally bought a house together & they get to share a home at last just like they always wanted But being full time sisters is maybe a tiny bit harder than they expected At school there are new friends to make & a new class project to complete Everyone must write down their deepest secret so that their teacher Miss Eagle can set a giant ball alight & they can all watch their worries disappear But the ball of secrets mysteriously disappears & everyone's secrets are revealed Can Georgie & Jem discover who the secrets thief is & learn how to stick together in their new family?