YOU Season 3: 9 Exciting Fan Theories
5. Will Bettelheim Has Stockholm Syndrome
When Joe moved to Los Angeles, he took Will Bettelheim's identity and locked the real Will in the vault. Despite being locked up, Will seemed quite attached to Joe and at times they spoke to each other like friends. It made things better when Joe let Will go free and they kept in touch.
Reddit user HelpWheresMyDad theorised that Will could essentially have Stockholm Syndrome and could return in season 3 to explore this. This would be another way of showing Joe's past coming back to haunt him, even when he tried to do the right thing by letting Will go.
This will especially be interesting if Will tries to do copycat kills or keeps someone else captive himself and enlists Joe's help.