Sarah Deane is at loose ends after completing her PhD. Bowdoin College doesn't have a place for her until the next semester, and Alex is incredibly busy at the hospital. Cousin Giddy's phone call seems like a godsend. At teacher at the exclusive boarding school at which she works is taking a maternity leave, and the school is in need of an English teacher immediately. Sarah accepts the position and is off to her childhood home of Carlisle, MA. The teachers are an odd bunch, but not sinister. Having been dragooned into going to a slide show given by the art history teacher, Sarah becomes one of the last people to see her alive.There are many plot twists and turns in this novel and the mystery is pretty engrossing. Borthwick writes an excellent academic mystery.