Secrets aren't safe in a creepy '13 Reasons Why' final season trailer

The characters on 13 Reasons Why might have thought they wrapped everything up neatly by pushing through a twisted murder investigation in Season 3 — but someone knows the culprits are still free.

Season 3 ended with Monty (Timothy Granaderos) in prison for Bryce's (Justin Prentice) murder, but things aren't as neat as...