Lois Duncan's Killing Mr. Griffin is a cautionary tale of a teenage prank gone wrong. Mr. Griffin is a teacher with incredibly high standards, which not all of his pupils can reach. Mark Kinney, a student often singled out for poor or plagiarized work, decides to take revenge against the hard-nosed teacher. He enlists his friends David, Jeff, and Betsy to help carry out a kidnapping. The students take Mr. Griffin to the woods, and destroy his medication, careless of his need for the critical pills. Susan, who has come to the woods in Betsy's car, does not want to be involved in the plot, which includes leaving the teacher overnight in the woods under the threat of death. When the teens return to the woods, they find their teacher dead of a heart attack, and the horrified teens bury Mr. Griffin in a shallow grave. The harrowing cover-up that ensues, and the psychopathic unraveling of Mark, makes Duncan’s novel a thrilling and suspenseful tale that will keep readers riveted. Recommended for high school students.