The Roommate
Isabella Ricci has found the perfect roommate.  Quiet, clean, and considerate, Lisa Fontaine is  totally interested in Isabella's life. But maybe she's  a little too interested...
Lisa  starts to dress and talk like Isabella, and  instantly hits it off with all her Sweet Valley friends,  especially best friend Jessica Wakefield. But Lisa  crosses the line when she takes Isabella's  clothes, cuts and dyes her hair just like Isabella's, and  sneaks into Isabella's boyfriend Danny Wyatt's  room.
Suddenly Isabella is scared.  Lisa seems dead set on taking her friends, her  identity...maybe even her life.