Warning: The following contains spoilers for Only Murders in the Building season 4, episode 10, “My Best Friend’s Wedding.”Only Murders in the Building‘s surprise character, who makes a guest appearance in the season 4 finale, will return for season 5. In the episode, which aired on October 29, Tea Leoni stars as Sofia Caccimelio, wife of Nicky “The Neck” Caccimelio, who gives Mabel and Charles her business card after failing to convince them to investigate her husband’s disappearance, which she says has everything to do with the building they live in.

https://screenrant.com/only-murders-building-season-5-tea-leoni-returning/