The Perilous Gard (Newbery Library, Puffin)

In 1558 while imprisoned at Elwenwood Hall, a remote castle in northern England, teenaged Kate Sutton finds herself involved in a series of mysterious events that eventually bring her to an underground labyrinth peopled by the last practitioners of druidic magic.In 1558 while imprisoned in a remote castle, a young girl becomes involved in a series of events that leads to an underground labyrinth peopled by the last practitioners of druidic magic