Clay Jensen Returns Home From School One Day to Find a Mysterious Box, With His Name on It, Lying on the Porch. Inside He Discovers 13 Cassette Tapes Recorded by Hannah Baker - His Classmate - Who Committed Suicide Two Weeks Earlier. on Tape, Hannah Explains That There Are Thirteen Reasons Why She Did What She Did - and Clay is One of Them. If He Listens, He'll Find Out How He Made the List - and It'll Change Clay's Life Forever.