. . "School stories." . . . . . . "Jessica and Elizabeth see their substitute teacher getting into the back of a police car, which leads them to believe that he is a criminal." . . . . . . . . "The new substitute teacher, Mr. Marshall, is very strict and the class is on its best behavior, but when the twins, Jessica and Elizabeth, see Mr. Marshall get into a police car, they begin to wonder if he might be a dangerous criminal."@en . . . . "Fiction" . "Fiction"@en . "Mystery fiction"@en . . . . "Even in second grade the twins are up to mischief and solving mysteries."@en . . "The Twins' Mystery Teacher" . . . "The Twin's Mystery Teacher Sweet Valley Kids"@en . "The twins' mystery teacher" . . "The twins' mystery teacher"@en . "Twin's mystery teacher"@en . . . . . "Juvenile works"@en .