Before Katherine Langford was given the lead role, she auditioned for both Jessica Davis and Hannah Baker.
The inspiration for Jay Asher to write the book was a family member of his committing suicide. Some of the experiences Hannah Baker faced happened to real teenage girls.
Tony’s wrist tattoo of a cross contains a semicolon, which is a symbol for suicide awareness and depression.
People can listen to the tapes on the “13 Reasons Why” website.