A rival podcaster with millions of followers who tries to hijack the trio's investigation for internet clout.

: The mysterious death of the Arconia’s long-time doorman,

In an exclusive interview with WEBD, co-creator John Hoffman revealed that Season 13 will break the show’s traditional format entirely. Instead of a contemporary murder, Charles, Oliver, and Mabel will investigate a cold case from 1924—the original construction of the Arconia.

The excitement around the series is arguably higher now than ever before. The end of Season 4 left fans with a shocking cliffhanger: the murder of the beloved Arconia doorman, Lester (played by Teddy Coluca since Season 1). After the trio solved the murder of Sazz Pataki (Jane Lynch)—committed by a jealous screenwriter—they discovered Lester's lifeless body in the courtyard. This set the stage for a thrilling Season 5.

A 10-episode companion series featuring cast interviews and behind-the-scenes insights, typically released on YouTube and major podcast platforms alongside new seasons.

The third season of "Only Murders in the Building" boasts an impressive guest star lineup, including: