My naughty little sister is stubborn and greedy and full of mischief. She tries to cut off the cat's tail and eats all the trifle at Harry's party! How much bother can one little sister be?

My naughty little sister and Bad Harry make secret friends with a mouse and find a hiding place for their bread crusts!

It's double trouble My naughty little sister's best friend, Bad Harry, is just as naughty as she is! They make secret friends with a mouse and feed it bacon and cheese, and they pretend to eat their bread crusts but hide them instead. Together they cause terrible mischief.

My naughty little sister is always doing silly things. She's curious about what's in a chimney and sticks a feather duster up and then tries to hide all the soot! But when she has measles she's itchy and sad and grumpy and has to stay in bed and can't be naughty at all! How long before she's bad again?

My naughty little sister is very bad, but sometimes she can be good. She helps Grannie to make a Christmas pudding, and she even teaches Bad Harry to be good so that he's allowed to wear his new red coat! Has my naughty little sister changed?