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Someone"s trying to make the students sick at the upscale boarding school, Danforth Academy! Abby, Paige, Claire and Taylor, join forces to solve the mystery. Could it be Mia or Riley - the girls who have everything that money can buy? Or Emily the know it all Principal"s daughter? Maybe it"s the wacky Sean Meneskie? Or the school"s strange Professor Plume. Whoever it is, the four best friends are going to find out!