Maureen and Francine Carter are twins and best friends. They participate in the same clubs, enjoy the same foods, and are partners on all their school projects. But just before the girls start sixth grade, Francine becomes Fran -- a girl who wants to join the chorus, run for class president, and dress in fashionable outfits that set her apart from Maureen. A girl who seems happy to share only two classes with her sister! Maureen and Francine are growing...

"When a new girl moves to Sweet Valley, the Wakefields are ready to welcome her to town--unfortunately for Jessica and Elizabeth, Brooke Dennis seems to want nothing to do with them. She's the meanest girl they've ever met! The last thing Jessica wants to do is show her around or help her at school. Elizabeth wonders if maybe there is more going on with Brooke--there has to be a reason she's so mad allthe time, right?"--

"Twins Dani and Dorian Wytte have been through everything together -- including joining forces with trouble maker Nico, Princess Monica, and golden boy Mark to sneak into the witch's sabbath, spring hostages from prison, and defend the castle when it was attacked by witches. With witches like their parents out for power and blood and non-magical people increasingly threatened by them, Dani and Dorian don't know whose side they're on...or if anyone's...

"Mallory knows she's a good baby-sitter. She's been looking after her seven younger brothers and sisters for years. So when Kristy offers her a steady job baby-sitting for the Arnold twins, Mal thinks it'll be easy money. The twins sure are cute in their matching outfits. But once Mrs. Arnold leaves, Marilyn and Carolyn turn into twin terrors! They trick Mallory so that she can't tell them apart and they act like spoiled brats. Taking care of Marilyn...

Luis Fernando and Luisa Teresa are twins who learn about who they are and what their sibling means to them when they are sent to different middle schools.