Summary: It's Harry Potter's first year at Hogwarts School of Witchcraft and Wizardry. But his little sister, Kata Potter, still has a year to go. She's still in Little Whinging. And nothing is the same. Her brother is gone, her friends have changed, and she's been told to trust no one. All Kata has left is an assignment from her teacher: find and catalog the twenty things that make her world go 'round. Maybe Kata's too young for the magic, but she's going to have her own adventures... adventures that will take her from Little Whinging to London, a police station, the back of a train, a stage with a bright light... and maybe even to Hogwarts itself.

Twenty Things is a story about finding yourself, your friends, your secrets, and your past, and hacking it all into some sort of future.