After a teenage girl's perplexing suicide, a classmate receives a series of tapes that unravel the mystery of her tragic choice.
EP01 Tape 1, Side A
As the school mourns the death of Hannah Baker, her friend Clay receives a box of tapes with messages she recorded before she committed suicide.
EP02 Tape 1, Side B
Hannah makes friends with Jessica and Alex, two other new students. Justin doesn't show up at school, and Hannah's mother finds something troubling.
EP03 Tape 2, Side A
Jealousy and gossip take a toll on Hannah's relationships. As Alex struggles with feelings regret, the guys pressure Clay into getting drunk.
Tape 2, Side B
Hannah thinks someone is stalking her and sets a trap. Hannah's mother confronts the principal, and Clay strikes back at someone who wronged Hannah.
Tape 3, Side A
Hannah and Clay connect at the school dance, but a crass rumor ruins the mood. Clay takes Courtney to visit Hannah's grave.
Tape 3, Side B
Hannah's date on Valentine's Day doens't go as planned. Alex gets in a big fight at school and has to face the honor board.
Tape 4, Side A
Another student sabotages Hannah during a class project. Clay's nightmares about Hannah spill over into the daytime.
Tape 4, Side B
Inspired by a friend's poetry reading, Hannah pours her heart out. Tony confides in Clay about the night of Hannah's death.
Tape 5, Side A
Hannah witnesses a traumatic event at a summertime party. Clay tries to reason with Justin, and Marcus warns him that the worst is yet to come.
Tape 5, Side B
A distraught Hannah gets a ride home from the party. Jessica's behavior grows increasingly erratic, and Clay learns the truth behind a tragedy.
Tape 6, Side A
Clay and Hannah grow closer. While Clay spends a heartbraking night listening to his tape with Tony, tensions boil over at Bryce's house.
Tape 6, Side B
Hannah winds up at a party after an argument with her parents. The students are served with subpoenas, and Justin wrestles with conflicting loyalties.
Tape 7, Side A
Hannah seeks help from Mr. Porter, the school counselor. Clay plays the new tape for Tony and weighs what to do next.