‘Only Murders in the Building’ Season 6 Gets a Brilliantly British Boost With Its Most Stacked Guest Cast Yet

‘Only Murders in the Building‘ has never been shy about stacking its guest roster with extraordinary talent, and the London-set sixth season is shaping up to raise that bar considerably. After five seasons rooted in the corridors of the Arconia, Hulu’s beloved true-crime comedy is taking its trio of amateur podcasters across the Atlantic for their most internationally ambitious chapter yet.

The renewal was confirmed by Hulu on October 28, following the release of the Season 5 finale, alongside the announcement of a significant shift in location, with the new season set and filmed entirely in London. Co-creator John Hoffman confirmed that the storyline will be fully steeped in London culture, calling the city “New York’s sister city” and describing the trio as “fish in new waters,” making this the show’s first fully international season.

Steve Martin, Martin Short, and Selena Gomez will reprise their roles as Charles-Haden Savage, Oliver Putnam, and Mabel Mora respectively, picking up a thread left dangling by a devastating finale cliffhanger.

Season 5 ended with Cinda Canning collapsing dead outside the Arconia after returning from a UK investigation, setting the stage for the new mystery. Showrunner John Hoffman has confirmed that Tina Fey will reprise her role as Cinda and will appear throughout the season as the investigation explores her “origin point.”

Now, Deadline has confirmed the guest cast that will populate this new London world, and it is a genuinely impressive collection of British talent. Jennifer Saunders, Sean Teale, Simone Ashley, Rhea Norwood, and Sharon Horgan are among the confirmed guest stars joining the upcoming season.

Steve Martin himself posted a set photo alongside co-stars Martin Short and Selena Gomez with the legendary comedian, captioning it: “We love working with Jennifer Saunders, for whom chewing the scenery is fine dining,” with Saunders spotted wearing a pink wig, oversized crinkled coat, and layered necklaces.

Each name in this lineup carries considerable weight. Saunders is best known for creating and starring in the BBC comedy ‘Absolutely Fabulous’ as the irresponsible fashion PR agent Edina Monsoon, a role that ran across five series and brought her international acclaim and a cult following.

Sharon Horgan, the Irish actress and writer behind ‘Catastrophe’ and ‘Bad Sisters,’ earned two Primetime Emmy nominations and a BAFTA TV Award for Best Drama Series for her Apple TV+ thriller.

Rhea Norwood, best known for her role as Imogen Heaney in Netflix’s ‘Heartstopper,’ brings a younger British sensibility to the ensemble, while Sean Teale’s career has spanned ‘Skins,’ historical drama ‘Reign,’ and the X-Men universe via Fox’s ‘The Gifted,’ demonstrating a versatility that suits a show known for casting against type. Simone Ashley and Sean Teale were also separately spotted by photographers on the London set while production was active.

The show is Hulu’s most-watched original comedy to date and has earned Emmy nominations for Outstanding Comedy Series across multiple cycles, so the confidence behind this guest lineup feels earned rather than accidental. Following the show’s established pattern of debuting between August and October each year, Season 6 is widely expected to arrive in fall 2026.

With the core trio, a murder rooted in British podcasting intrigue, and now a wave of beloved UK stars confirmed, the appetite among fans is already significant. Which of these new additions are you most excited to see collide with Charles, Oliver, and Mabel on the streets of London?