AceShowbiz - The fourth season of "Only Murders in the Building" has been a whirlwind of surprises, from exploring a new angle of the Arconia to adapting the podcast into a movie. Among the biggest shocks for viewers was the return of Paul Rudd in the latest episode. Rudd, who portrayed late movie star Ben Glenroy in season 3, now stars as Glen Stubbins, the character's former stuntperson.

Speaking to TheWrap, showrunner John Hoffman revealed the creative process behind Rudd's return. "We're doing a season about stunt doubles," Hoffman explained. "And who was Ben Glenroy's stunt double is not an unfathomable question."

Hoffman further hinted that Rudd's character will play a significant role beyond the fourth episode. "There's a lot going on with that character beyond this episode," he said. "There's more to come."

"Only Murders in the Building" has become a critically acclaimed fan favorite, garnering 21 Emmy nominations in its third season. The fourth season has continued to build on the show's success, featuring an impressive cast that includes Steve Martin, Martin Short, Selena Gomez, Meryl Streep, Molly Shannon and many more.

Set in the Upper West Side's Arconia building, the series follows three unlikely friends who become entangled in a series of murders. As the trio investigates these crimes, they uncover secrets and mysteries that lie within the Arconia's walls.

Viewers can catch new episodes of "Only Murders in the Building" season 4 every Tuesday on Hulu. The final episode is scheduled to air on October 29.