Cleo Knight is a character in the series All the Wrong Questions by Lemony Snicket. She is the only daughter of Mr and Mrs. Knight, and the only granddaughter of Ingrid Nummet Knight (the founder of Ink Inc.) She is a brilliant chemist and is very close to her identical twin housekeepers, Zada and Zora. She also owns a fancy car called Dilemma. She is working on a formula to make invisible ink in hopes of restoring Stain'd-by-the-Sea to its former self.