High Quality Content by WIKIPEDIA articles! The Provost`s Dog trilogy is a series of young adult fantasy novels by best-selling author Tamora Pierce. The series is a prequel to Pierce`s first quartet, The Song of the Lioness, and is set in the fictional kingdom of Tortall two hundred years earlier. It details the adventures of Beka Cooper, a sixteen-year-old recruit of the Lord Provost, originally from a lower city family and now in service to the Provost`s Guard.