Liar & Spy is a children's novel written by Rebecca Stead published in 2012 that is set in Brooklyn and describes the adventures of Georges and Safer, two middle school students who are working to unmask a suspected spy in their building. At the same time, Georges is experiencing a casual bullying that adults in his life seem to minimize. Stead was the first American author to win the Guardian Children's Fiction Prize for Liar & Spy, in 2013.