Martin Short as Oliver Putnam,[7] a financially struggling Broadway director who spawns the idea of the podcast, and becomes its director. He lives in 10D at the Arconia. Selena Gomez as Mabel Mora,[7] a young woman who lives in 12E at the Arconia, a refurnished unit that she is renovating for her aunt, and who was friends with Tim Kono (the murder victim) years ago Aaron Dominguez as Oscar, a friend of Mabel and Tim who was wrongly convicted of the murder of their friend Zoe ten years ago and was discharged from prison recently Amy Ryan as Jan, a professional bassoonist who also lives in the Arconia and starts dating Charles