Charles, Oliver, and Mabel are back—and this time, the mystery hits closer to home. After the sudden and suspicious death of their beloved doorman Lester, the trio dives into an investigation that leads them straight into the dangerous world of billionaires and old-school mobsters. Watch the official trailer for Season 5 of Only Murders in the Building before it premieres September 9 on Hulu and Hulu with Disney+.