'Only Murders' is back and headed to Hollywood! As part of Disney's upfront presentation, Hulu revealed the trailer and premiere date for the upcoming fourth season of 'Only Murders in the Building.' As previously reported, season four of Only Murders starring Selena Gomez, Martin Short and Steve Martin will follow Mabel, Charles and Oliver searching for answers about who killed Jane Lynch's character Sazz Jane Lynch, if they were actually aiming for Charles and why anyone would want to kill either of them.