Revenge of the Slitheen (2) (S01E02)

Title: Revenge of the Slitheen (2) Plot: After narrowly escaping the Slitheen, the kids reunite with Sarah Jane at her home. They learn that vinegar is lethal to the Slitheen, and equipped with bottles of it, they head back to school to confront the three adult Slitheen and their device. Meanwhile, Carl, who had taken on the guise of the top student, evades capture by using a teleport, leaving Sarah Jane believing he has perished. Once back, she welcomes Clyde into their circle but requests that he keep their adventures a secret from others.