"Thirteen Reasons Why" is a young adult novel by Jay Asher that tells the story of Hannah Baker, a high school student who takes her own life. Before her death, she records a series of cassette tapes explaining the reasons behind her decision, each tape addressing a different person who contributed to her struggles. The narrative unfolds through the perspective of Clay Jensen, a classmate who receives the tapes. As he listens, he learns about the events and interactions that led to Hannah's feelings of isolation and despair, prompting a deeper conversation about mental health, bullying, and the impact of one's actions on others.