“Only Murders in the Building” is gearing up for season five. The show recently announced on social media that they’re already in production…and now we have our first big casting news for the upcoming season. Keegan-Michael Key has reportedly signed on for a recurring role in season five. Unsurprisingly, details about his story in the murder-mystery-comedy are currently under wraps. “Only Murders in the Building” stars Steve Martin, Martin Short, and Selena Gomez…and featured a ton of stars in season four, including Meryl Streep, Eugene Levy, Zach Galifianakis, Eva Longoria, Jane Lynch, Richard Kind, Melissa McCarthy, Kumail Nanjiani, and Molly Shannon. Check out the production announcement below...