She learns that Sabina Lazlo, the headmistress at Wintonbury is murdered. She has a weekly girls night out with her best friend Elaine who teaches drama at Wintonbury and together they decide to try to learn as much as possible about Sabina and find the murderer on their own. Almost all the faculty has had some type of run in with her which makes them all suspects. Her husband Swash even gets involved to try to get her some leads to start on. What she discovers about Sabina is that she wasn’t the person who everyone thought she was. She was hiding secrets from her past that eventually from Susan’s own sleuthing and with the help of her friends are brought into the light. That still doesn’t explain who murdered Sabina though but she decides to get with some of the students and have an old-fashioned tribunal to draw out the real killer.