The Mysterious Benedict Society is a quartet of children's books by Trenton Lee Stewart chronicling the adventures of four children, initially gathered together by the eccentric Mr. Benedict. The first children's novels written by Stewart, each of the first three books were published annually from 2007 to 2009, with the fourth installment following a decade later. A companion book was released in 2011, and a prequel novel detailing the backstory of Mr. Benedict was released in 2012, called The Extraordinary Education of Nicholas Benedict. Source: Wikipedia (en)