13 Reasons Why (stylized onscreen as Th1rteen R3asons Why) is an American drama-mystery web television series based on the 2007 novel Thirteen Reasons Why by Jay Asher and adapted by Brian Yorkey for Netflix. The series revolves around a high school student, Clay Jensen, and another student, Hannah Baker, who committed suicide after suffering a series of demoralizing circumstances, brought on by select individuals at her school. A box of cassette tapes recorded by Hannah before her suicide details thirteen reasons why she ended her life.
Diana Son and Brian Yorkey serve as co-showrunners on the series, which consists of thirteen episodes. The series is produced by July Moon Productions, Kicked to the Curb Productions, Anonymous Content and Paramount Television. Originally conceived as a film set to be released by Universal Pictures with Selena Gomez in the lead role, the adaptation was picked up as a television series by Netflix in late 2015. Gomez serves as an executive producer. All episodes, and the special 13 Reasons Why: Beyond the Reasons, were released worldwide on Netflix on March 31, 2017.