
With Peter Capaldi joining the cast, Only Murders in the Building Season 6 is getting even more exciting. The actor will be there with David Tennant and Jodie Whittaker, who are also actors on Doctor Who. Their roles are still a secret, and it hasn’t been decided if they will share scenes or not.
In Season 6, the mystery also moves to London, where Charles, Oliver, and Mabel are challenged with a new case following the apparent murder of Cinda Canning in England.
How Is Only Murders in the Building Season 6 Becoming a Doctor Who Whodunit?

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Only Murders in the Building Season 6 is becoming a major Doctor Who reunion as Peter Capaldi joins David Tennant and Jodie Whittaker. According to Deadline, Capaldi will be a returning guest star in the sixth season.
After Season 5, the new season takes Charles, Oliver, and Mabel across the pond. There is still only Steve Martin, Martin Short, and Selena Gomez as the core trio. The roles of the former Doctors are still a secret.
Why Does Peter Capaldi’s Casting Make the Doctor Who Connection Bigger?
Peter Capaldi played the Twelfth Doctor, while David Tennant played the Tenth and Fourteenth Doctors and Jodie Whittaker played the Thirteenth. Having all three cast members in one season creates a crossover. Capaldi is a confirmed recurring guest, but his character remains secret.
- Major addition: Peter Capaldi joins recurring guest stars including Nicola Coughlan, Richard Ayoade, Jim Broadbent, Derek Jacobi, Adrian Lukis, Kathryn Hunter, Jane Horrocks, Sean Teale, Simone Ashley, Amar Chadha-Patel, Rhea Norwood, Matthew Beard, Sharon Horgan, Martin Freeman, Geri Halliwell-Horner, Jamie Demetriou, Anjana Vasan, and Lesley Nicol.
- Doctor Who history: Jim Broadbent adds another connection because Deadline notes that he played an alternate Doctor in the 1999 Comic Relief special The Curse of Fatal Death.
- Wider cast links: The ensemble also includes performers connected with Downton Abbey, Sherlock, We Are Lady Parts, and Stath Lets Flats, adding a strong British presence.
Will Peter Capaldi, David Tennant and Jodie Whittaker Share the Screen?
The scenes that Peter Capaldi, David Tennant, and Jodie Whittaker will share are not set in stone. ComicBook and MovieWeb both say not to assume that their stories will meet. ComicBook also says that the two Doctors have never been shown together on screen before, which makes the idea more interesting without proving it.
- Shared scenes: No scanned source confirms that the three former Doctors appear together in the same scene or episode.
- Secret roles: Their Season 6 characters have not been revealed, so claims about suspects, victims, murders, or links to Cinda Canning would be speculation and spoilers.
- Confirmed casting: Hulu has announced their involvement, but no photos, episode details, or statements from the actors or directors prove an onscreen reunion.
Fans can celebrate the casting without treating speculation as fact.
Why Does the London Setting Make the Doctor Who Reunion More Intriguing?
The London setting makes the Doctor Who connection even more interesting because Only Murders in the Building is leaving its familiar New York base.
Deadline reports that production is continuing in the U.K. and describes this as the first time the series has ventured outside the United States. Charles, Oliver, and Mabel are now tied to a new mystery following the Season 5 setup involving Cinda Canning’s apparent death.
- London shift: Filming in London gives the sixth season a different setting while keeping the mystery structure intact.
- Release status: No official premiere date was confirmed in scanned sources. ScreenRant discussed possible later timing, while MovieWeb suggested a 2026 return based on past history, so October should not be stated as confirmed.
- Accuracy note: Da’Vine Joy Randolph and the phrase Da’Vine Joy should not be presented as confirmed Season 6 cast details from these references. Hulu renewed the series, but that does not establish when the new episodes will arrive.
While filming is still going on and roles are being kept secret, Hulu will soon be announcing the cast, story, and premiere date.
Final Thoughts
Only Murders in the Building Season 6 is the start of a fun new part for the comedy. The London mystery gives Doctor Who fans hope for a new story, and Peter Capaldi’s joining David Tennant and Jodie Whittaker makes a big connection between the three. Their parts and any scenes they might have together are still a secret for now.
FAQs
Yes. Hulu renewed Only Murders in the Building for Season 6, with Steve Martin, Martin Short, and Selena Gomez returning for the next chapter of the comedy mystery.
Whether Season 5 is bad is subjective, as fans have different opinions about its story, comedy, characters, and mystery, but Season 6 offers hope for a fresh direction in London.
Only Murders in the Building has not confirmed Mabel Mora, played by Selena Gomez, as autistic, so viewers should not present that interpretation as an established fact.
Selena Gomez and Steve Martin have spoken positively about working together, and their long-running partnership with Martin Short has become an important part of the series.
The big moment is Peter Capaldi joining David Tennant and Jodie Whittaker in the Season 6 cast, although it remains unknown whether the three Doctor Who stars will share scenes.
