Only Murders in the Building Season 3 picks up where we left off, with Oliver, Charles, and Mabel basking in the success of their true-crime podcast and their involvement in solving the murder of Tim Kono. However, their peaceful existence is quickly shattered when a new murder occurs within the walls of the Arconia.

The season introduces Loretta Durkin, a struggling actress played by the legendary Meryl Streep. Loretta is a complex character who dreams of making it big on Broadway. Her audition for Oliver's new play, "Death Rattle," impresses him, and she lands the lead role. However, Loretta's journey is filled with challenges and setbacks, both on and off the stage.
The premiere episode introduces the victim, Ben Glenroy, a famous movie star making his Broadway debut. Ben is a larger-than-life character who clashes with the rest of the cast and crew. When he mysteriously dies on opening night, Oliver, Charles, and Mabel are drawn back into the world of murder and mystery.
The episode's plot twists and turns as the trio investigates Ben's death. They interview suspects, analyze evidence, and piece together the puzzle of who could have committed the murder. The investigation leads them down unexpected paths, revealing secrets and hidden motives of those involved in the production.
The murder of Ben Glenroy provides Oliver, Charles, and Mabel with a new opportunity to revive their podcast. They see it as a chance to not only solve the crime but also to reconnect and strengthen their bond. The podcast becomes a central element of the season, allowing the trio to share their findings with the audience and engage in lively discussions.
As the investigation progresses, a shocking revelation emerges: Ben Glenroy is not actually dead. His return adds a new layer of complexity to the case and raises even more questions. The trio must now grapple with the possibility that their initial assumptions were wrong and that the killer is someone they never suspected.
The premiere episode sets the stage for a thrilling and suspenseful season of Only Murders in the Building. With the return of Ben Glenroy and the introduction of Loretta Durkin, the Arconia is once again a hotbed of mystery and intrigue. As Oliver, Charles, and Mabel delve deeper into the investigation, they will face new challenges and uncover secrets that could change their lives forever.