'Only Murders in the Building' Season 3 Trailer: Selena Gomez Fails at Girl Talk & Investigates Meryl Streep

Meryl Streep, Paul Rudd, Jesse Williams and Ashley Park join the cast of the mystery-comedy in the upcoming season, out Aug. 8.

Only Murders in the Building is bending their titular rules a little bit in season 3 -- to try and solve a murder in a theater!

Hulu shared the trailer for the lauded mystery-comedy's upcoming third season on Wednesday, giving fans a look at how the show's central trio -- Charles-Haden Savage (Steve Martin), Oliver Putnam (Martin Short), and Mabel Mora (Selena Gomez) -- is set to tackle the shocking death of Ben Glenroy (Paul Rudd), the star of Oliver's triumphant directorial return to Broadway.

"Well, you know, who are we without a homicide?" Mabel wonders in the trailer.

The trio make the "corny" decision to start their murder podcast back up in order to investigate Ben's castmates, who include series newcomers Meryl Streep as Loretta Durkin, an aging actress who is "bad at table reads," and Ashley Park as Kimber, a "Tik Tok-obsessed" social media star.

"Theater is is all about choices," Loretta says ominously in the clip. "What you share, and what you hide. Those choices change everything."

Also joining the cast this season are Jesse Williams as a co-investigator and possible love interest for Mabel, and Matthew Broderick in an as-yet-unknown role.

Watch the full trailer below:

Ben's surprising death was teased in the season 2 finale, in a flash-forward to Oliver's big opening night. With Mabel in the audience to support her friends, and Charles-Haden taking the stage as one of the stars, Oliver first had some fires to put out with his leading man,

Ben insinuated that he and Charles-Haden had been feuding over the course of the production so far, and even went so far as to threaten, "I just might [kill him], I'm warning you."

Ultimately, Ben's rage didn't amount to much more than a new mystery, as he dropped dead onstage in the show's opening moments, leaving the central trio in disbelief that murders don't only happen in the building at the Arconia.

"Season 3 is set up," Martin shared with ET of the Murders to come. "I believe in a complete story per year. I don't believe in [a cliffhanger] so every year they never solve the crime -- we actually solve the crime and then we will introduce a teaser for next year."

ET also spoke with Only Murders EP Dan Fogelman at the Hollywood Critics Association TV Awards last summer, where he opened up about landing Rudd for the cameo and hinted at his plans for season 3. 

"All I will say is that doors open up to you when you have Steve Martin, Martin Short and Selena Gomez in your television show, and if they make a couple of telephone calls for you," he noted with a laugh. "That has been our North Star and our lucky star since we started it, and it continues to work for us."

The This Is Us creator also shared cryptically that "it's going to be a big season."

Only Murders in the Building season 3 premieres Aug. 8 on Hulu.