In the tenth episode of 13 Reasons Why season one, titled " Tape 5, Side B ," the focus is on Sheri Holland's involvement in a fatal car accident. Sheri accidentally knocks down a stop sign and leaves Hannah stranded, resulting in a crash that kills Jeff Atkins. Clay discovers the truth behind Jeff’s death and confronts Sheri about her guilt and her secret actions in the present day.
You can find more details in this 13 Reasons Why Wiki article or read the full episode transcript . Tape 5, Side B | 13 Reasons Why Wiki | Fandom [S1E10] Tape 5, Side B