In her struggle to protect her best friend from getting hurt, Elizabeth finds herself torn between Amy, who is determined to join the Unicorn Club's cheering squad, and her twin sister Jessica, who is one of the Unicorns who do not want Amy on the team.

"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?"-- Provided by publisher.

Fixing up a run-down shack for their Halloween party, the Unicorn Club is horrified when Ellen finds a skull, Jessica gets lost in a bat cave, and a mysterious ghost girl appears with a warning for them all.

"When six clones join Emmaline's prestigious boarding school, she must confront the heartbreak of seeing her dead best friend's face each day in class"-- Provided by publisher.