ALVINNN!!! and the Chipmunks 2015 Season 3 Episode 10 - The Fugitives / Sherlock Chipmunk >Jeanette is inspired to become a detective after she had been reading a number of Sherlock Holmes books, and sees a potential mystery when Theodore's Talking Teddy turns up missing. Dragging a reluctant Eleanor along as her Dr. Watson, Jeanette follows the clues she discovers, which eventually leads them to Ms. Croner's house, where they learn that Alvin had made a deal with her: she will make a special superhero outfit for Teddy for Theodore's birthday, in exchange for Alvin helping her eat several jars of an awful jam that a friend had made for her.