'Only Murders in the Building' Season 4: Every Detail We Know

The murder-mystery comedy Only Murders in the Building has just returned for a standout, star-studded third season. In season 3 of Only Murders, the Emmy-winning series has expanded its world beyond the Arconia, to follow a murder investigation set among the cast of a Broadway show, complete with original songs and an added layer of complications for the podcasting trio of Oliver (Martin Short), Charles (Steve Martin), and Mabel (Selena Gomez). Now that OMITB has expanded the subjects of its true-crime parody from one building's co-op board to a group of possibly-murderous thespians, we can't help but wonder where the show could go next. Read on for what we know about season 4 of Only Murders in the Building so far, to be updated as the show releases more hints of the next mystery.

Has 'Only Murders in the Building' been renewed for season 4?

Yes! The show's official Instagram announced the renewal on the same day that the Season 3 finale revealed next season's murder. (R.I.P. [spoiler].) The news also followed the tentative end of the writers strike, which means that the writing team, led by showrunner John Hoffman, can get right to work crafting the upcoming episodes. With the actors strike (hopefully) coming to an end soon, Season 4 could arrive next fall, following the show's schedule of premiering a new season each year.

When will 'Only Murders in the Building' season 4 come out?

OMITB has kept up a yearly release schedule so far, with season 1 premiering in August 2021, season 2 in June 2022, and season 3 this August. Since Season 4's announcement is coming a bit later than previous early renewals, we're guessing that the new episodes could arrive in early fall 2024.

What will 'Only Murders in the Building' season 4 be about?

Spoilers for the season 3 finale ahead. After wrapping up the true killer(s) who murdered Ben Glenroy, the season 3 finale introduced the show's next big mystery. The mood for the episode's final moments is celebratory at first, as Death Rattle Dazzle receives a rave review. Soon Sazz (Jane Lynch) shows up to join the festivities, with Charles's longtime stunt double letting herself in, as she may have "made copies of all his keys." Charles and Sazz take a selfie that gives us a moment to notice they're wearing very similar clothes, after which Sazz mentions to Charles that she wants to talk to him later about something "a little sensitive." Charles also says that he's going to grab a very rare wine from his apartment for the occasion.

Cut to Charles's dark apartment, where we see a figure that looks like Charles walking into the kitchen without turning on the lights. A shot rings out. We see a bullet hole through his window, as the bullet hits his chest and he crumples to the ground. However, it's not Charles, it's Sazz! The stunt double touches her chest and the camera panning away as she passes out and struggles for breath. And with that, OMITB has its latest murder in the building.

So many questions to answer in Season 4. Was the killer targeting Charles? That makes the most sense; it was his apartment, and Sazz has made a living off of her resemblance to him. However, there was the matter of whatever "sensitive" discussion she wanted to have with him. If the killer was watching through the windows, tracking Charles and Sazz at Oliver's party, could they have intentionally shot Sazz at the perfect time, knowing that police will assume their target was Charles? Sure I may be thinking too hard, but the show has pulled off more intricate twists.

While the majority of season 4's plot is still under wraps, Disney Television Group President Craig Erwich dropped a big hint for what to expect in a February 13, 2024, interview with Deadline. Per the exec, Charles, Oliver, and Mabel will spend some time in LA early in the season, before returning to their home base NYC to investigate Sazz's murder.

"I’m very excited to see Steve, Martin and Selena take a little break from the apartment building and come to Los Angeles," he told the outlet. "So in the same way that John Hoffman used the canvas of Broadway to tell what I think was one of the most unique seasons you’ve ever seen, the same unique Only Murders take will be applied to Los Angeles, which I’m really excited about."

Who will be in the cast of 'Only Murders in the Building' season 4?

Hulu has begun to reveal which Hollywood stars have joined OMITB's upcoming fourth season. On February 14, 2024, Deadline reported that Saturday Night Live and The Other Two alum Molly Shannon will have a season-long guest arc on season 4, playing "a high powered LA business woman who finds herself drawn into the world of the investigation in NY." Then a week later, the outlet announced that Eva Longoria is also joining the season, only adding that her character "becomes integral to the twists and turns of this season’s investigation." Wrapping up the new cast members is Eugene Levy, in his first television role since Schitt's Creek.

In a delightful bit of news, Variety also reported this month that Meryl Streep will return to the role of Loretta Durkin in season 4. This means that Oliver and Loretta's relationship will likely still be going strong, and could even be the reason for Oliver's time in LA, where Loretta booked a new gig at the end of season 3. No official word yet on whether Jesse Williams will also reprise his role of Mabel's boyfriend Tobert.

Though OMITB has become known for its stellar selection of guest stars, the series also boasts a great core cast that sticks around from season to season. With all of Season 3's cast making it out alive season 3 alive (and no one moving out of the Arconia besides Mabel), but it's very likely that most of the main cast will return. This includes Steve Martin (Charles), Martin Short (Oliver), Selena Gomez (Mabel), Michael Cyril Creighton (Howard), Ryan Broussard (Will),  Jackie Hoffman (Uma), and Da'Vine Joy Randolph (Detective Williams). And of course, Jane Lynch (Sazz) will have a much larger role as her movements before her death play out in flashback.

There's also a big chance that some of the show's earlier cast members could return; James Caverly (Theo Dimas), for example, has showed up for at least one episode every season so far. One surprising departure ahead of season 3 was Nathan Lane (Teddy Dimas), who was unavailable for filming due to his Broadway play Pictures from Home. Lane confirmed to Deadline that he would love to return to the series, meaning we could also see the return of Teddy.