Netflix series You, which follows the deeply troubled life of fictional psychopath Joe Goldberg played by Penn Badgley, is returning to the streaming service for a new season from tomorrow.
The series will be released in two parts, with part one dropping tomorrow on February 9 and part two set for release a month later on March 9. Joe's various identities, acquaintances and sprees of madness mean it can be difficult to recall what went down in the last season.
With that in mind, here's four things that are crucial to remember going into next season. Just beware that this contains spoilers for season three, plus a brief preview from the trailers of what's to come in season four.