Beauty Cookson is no beauty. She's a plain, timid girl who constantly feels inferior to the super-confident, snooty girls at school. Worse than the teasing in the playground, though, is the unpredictable, hurtful criticism from her father. Beauty and her meek, sweet mother live in uneasy fear of his fierce rages, sparked whenever they break one of his fussy house rules.

Being a sister isn't always easy ... but what's the very worst thing about your sister? Marty and her sister Melissa couldn't be more different. Marty loves her Converse trainers, playing football, hiding in her secret den and helping her dad with his DIY. But Melissa loves Justin Bieber and all things pink, girly and pretty. The sisters can manage to live together, despite their occasional scraps but then Mum tells them they have to share a room.

Katy Carr is a lively, daredevil oldest sister in a big family. She loves messing around outdoors, climbing on the garage roof or up a tree, cycling, skateboarding, swinging.... But her life changes in dramatic and unexpected ways after a serious accident. Inspired by the classic novel What Katy Did, Jacqueline Wilson creates an irresistible 21st-century heroine. Fans of Hetty Feather and Tracy Beaker will fall in love with Katy and her family too.

Ella's mum is in a deep coma, having just had a new baby. That means Ella has to live with Jack, her hopeless stepfather, and cope with her tiny newborn brother, as well as worrying about Mum. The only thing that's going right is her school project. It's all about whales and how they sing out to each other to attract a mate – sometimes for hours. Maybe a whale song could reach Mum, wherever she is, and bring her back to Ella and baby Samson. Surely it's worth a try?

Hi! I'm Charlie (DON'T call me Charlotte – ever!). History is boring, right? Wrong! The Victorians weren't all deadly dull and drippy. Lottie certainly isn't. She's eleven – like me – but she's left school and has a job as a nursery maid. Her life is really hard, just work work work, but I bet she'd know what to do about my mum's awful boyfriend and his wimpy little son. I bet she wouldn't mess it all up like I do ...