Selena Gomez, Martin Short and Steve Martin chat with ET’s Denny Directo about ‘Only Murders in the Building’ season 5, streaming Sept. 9 on Hulu. The actors open up about all the A-list guest stars appearing in season 5 and who they were most shocked agreed to join the show. Plus, the trio reacts to the possibility of the show coming to an end and if they would ever work together on another project.