Warning: This post contains major spoilers for You season 4 part 1.You season 4's first murder resembles a season 2 death in a tragic reference to the past. You season 4, part 1 puts Joe at the center of a group of privileged elitists in London. While Joe attempts to enjoy his European holiday under the guise of professor Jonathan Moore, he accidentally becomes part of the wealthy group whose members keep winding up dead. Additionally, Joe must also deal with the killer who texts him through a disappearing messaging app, who begins to dig up his true identity and horrific past. Slowly, Joe is learning that he cannot run from his past.

https://screenrant.com/you-season-4-malcom-murder-2-reference/