- Primary Subject: Only Murders in the Building Season 6 casting updates
- Key Update: Peter Capaldi has officially joined the cast of Only Murders in the Building Season 6, reuniting him with fellow Doctor Who leads.
- Status: Confirmed
- Last Verified: August 13, 2026
- Quick Answer: Peter Capaldi joins David Tennant and Jodie Whittaker in Only Murders in the Building Season 6, marking a rare reunion for the three Doctor Who stars.
The upcoming sixth season of Only Murders in the Building will reunite the three actors who have starred in Doctor Who.
The hit Hulu mystery comedy series is currently in production in London, marking the first time filming takes place outside the United States. While the main cast will return, it will also feature a star-studded guest cast of some of the best British performers on screen and stage.
Not only that, as it turns out, the upcoming season will also feature three actors who played the Time Lord.
Which Doctor Who Actors Will Appear in Only Murders in the Building Season 6?
Deadline has confirmed that Peter Capaldi is joining the cast of the sixth season of Only Murders in the Building as a recurring guest star. The details regarding his role are currently under wraps.
With his casting, this would mean that the upcoming season will have three Doctor Who stars in its cast. Aside from Capaldi, David Tennant and Jodie Whittaker are already part of the recurring players.
It remains unknown whether the three former Doctor Who stars will share a scene, but this is exciting news for fans since this is a very rare opportunity to see the alumni of the iconic series work together in the same project.
Aside from the Doctor Who trio, also part of the recurring guest cast are Martin Freeman, Sharon Horgan, Bridgerton stars Nicola Coughlan and Simone Ashley, British comedy stars Richard Ayoade, Jennifer Saunders, and Jamie Demetriou, and Spice Girls member Geri Halliwell-Horner.
Veteran actors Jim Broadbent, Kathryn Hunter, Adrian Lukis, Lesley Nicol, and Derek Jacobi will also make guest appearances in the season. There are rumors that Olivia Colman will also guest star.
What to Expect in Only Murders in the Building Season 6
Only Murders in the Building has officially crossed the pond, with production on Season 6 currently underway in the UK. Marking the first time the hit series leaves the States, the upcoming season follows the crime-solving trio, Charles (Steve Martin), Oliver (Martin Short), and Mabel (Selena Gomez), as they swap New York City for London to investigate the death of Cinda Canning, a shocking twist teased in the Season 5 finale.
Alongside the central trio, Michael Cyril Creighton is confirmed to return to the cast. Da’Vine Joy Randolph has also been spotted on set, suggesting that she will also return to reprise the role of Detective Donna Williams.
Hulu has not set a release window yet for the sixth season of Only Murders in the Building. For now, stay tuned for news and updates regarding its release in the coming months.
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