This case uses an excerpt from the novel I Never Promised You a Rose Garden to teach students to recognize symptoms of mental illness. Students read the excerpt and then work in small groups of two to three to identify and label symptoms of mental illness. Emphasis is placed on supporting the students' classifications with direct quotes from the text. This focuses the students' attention on the importance of supporting inferences with evidence. While designed for undergraduates in an abnormal psychology course, the case also could be used in more advanced clinical courses.