Books in Sweet Valley Twins, No 50 series

On a hill on the outskirts of Sweet Valley sits a beautiful old Victorian house. It stood empty until a few weeks ago, when a new family moved in...the perfect clients for Elizabeth and Jessica Wakefield's baby-sitting service....Identical twins Jessica and Elizabeth Wakefield and their friends from Sweet Valley Middle School thought they'd landed their dream job when they started babysitting for the Riccoli kids. But little by little, their dream job is turning into a nightmare.Andrew Riccoli dreams that someone tried to set fire to his room--and wakes up in a cloud of smoke. Then Gretchen Riccoli dreams she's falling--and wakes up at the bottom of the mansion's dark, winding staircase. The babysitters are getting scared...too scared to close their eyes in the Riccoli mansion.

Playing detective... When a charm school opens in Sweet Valley, Jessica Wakefield can't wait to attend. What could be better than taking classes to learn about clothes, makeup, and going parties? Jessica's twin sister, Elizabeth, has no interest in the school at all--until she uncovers some suspicious things about its owners. Elizabeth convinces her friends Amy and Maria to sign up for classes and do some detective work. But the girls soon realize that charm school isn't as easy as they thought it would be. What's more, Amy and Maria are worried that Elizabeth's sleuthing may put them in real danger. It looks as if the girls may be in over their heads--in class and in their investigation!

The most dangerous game...Social studies class gets a lot more exciting when a visiting teacher, Mr. Levin, comes to Sweet Valley Middle School to teach the students a game. The rules are simple: Mr. Levin tells the students what to wear the next day, and they get points for obedience and demerits for disobedience. They get extra points for ratting on anyone who disobeys.Everyone loves the game, especially Aaron Dallas, who is determined to be the best player of all. But Elizabeth Wakefield thinks something is fishy. Why is it so important that everyone dress the exact same way? And if it's just a game, why is everyone taking it so seriously?

Lila Fowler is dreading Valentine's Day. She has no valentine, and she's determined not to let her friends in the exclusive Unicorn Club know. So she tells everyone that she does have a boyfriend and sends herself flowers and candy to prove it. Her valentine's name is Gray Williams, and he's rich, cute, and completely made up.The Unicorns are totally impressed, and Lila is thrilled -- until her friends pressure her into bringing Gray to the Valentine's dance. How can she bring a date that doesn't exist?

Mandy Miller wants to join the Unicorns, but the Unicorns don't want Mandy Miller! She wears wild thrift-shop outfits, and the other members think she tries too hard to fit in. Jessica thinks she's funny and nice, and she likes her offbeat way of dressing. The Unicorns have asked Jessica to tell Mandy that she can't join, but Jessica just can't bring herself to break the bad news.How can Jessica be friends with the Unicorns and Mandy at the same time? Suddenly Mandy gets some frightening news that makes the Unicorns seem unimportant to both Mandy and Jessica--and now Jessica is afraid of losing her newfound friend for good!