You season 4 - Wikipedia

The fourth season of Netflix's psychological thriller series You was ordered in October 2021 and premiered in two parts: February 9, 2023, and March 9, 2023. The season is set primarily in London and features a new cast of characters, including Lukas Gage and Charlotte Ritchie as series regulars. Penn Badgley returns as Joe Goldberg, while Tati Gabrielle reprises her role as Marienne Bellamy. The season explores the world further after the COVID-19 pandemic and uses different formats, such as whodunit and Fight Club-inspired storytelling.