Books in Sweet Valley Twins Super Chiller series

A traveling carnival is on its way to Sweet valley, and Jessica and Elizabeth Wakefield can't wait to ride the roller coaster, have their fortunes told, and try their luck at the games. But when they get there some odd things happen to the twins. A fortune-teller warns Jessica to stay away from the carnival. And a mysterious girl named Clair seems to appear out of nowhere and suddenly becomes best friends with Elizabeth.Elizabeth is strangely drawn to Claire. She begins to ignore her friends, her chores, and even her sister to spend time with her new friend. It's as if she's under an evil spell...a spell no one, not even Jessica, can break. And if her twin is in danger, how can Jessica help her?

When the Wakefield kids are invited to their aunt Helen's country inn, Steven and Jessica are determined to use the eerie old mansion to scare their sister, Elizabeth, into believing in ghosts. But no matter what Steve and Jessica do, logical Elizabeth always figures out their tricks. Thn things start happening that even Elizabeth can't explain, and all the Wakefield kids are afraid that the inn really is haunted. Will they make it through the summer sharing their vacation with an unfriendly ghost?

Strange things have been happening to Sam Sloane ever since he moved from San Francisco to Elizabeth and Jessica Wakefield's neighborhood in Sweet Valley. He can't figure out why everything in town looks so familiar--or why he's mysteriously drawn to a crumbling old mansion in town. When he visits a cemetary in the dead og night and sees a ghost who looks just like him, he tumed to Elizabeth and jessica for help.At first the twins think Sam is imagining things. After all, who believes in ghosts? But the more the girls get to know their new friend, the more they feel he's telling the truth. Something is out there. The twins are going to have to do a little ghost hunting of their own. But what happens if thye do discover a ghost? Or, worse, what happens if it discovers them?