Three Former Doctors Join Only Murders in the Building Season 6

David Tennant, Jodie Whittaker and Peter Capaldi all appear in the guest cast of Only Murders in the Building Season 6, which premieres on December 8. All three have played the Doctor in Doctor Who, the BBC's long-running science-fiction series. Tennant played the Tenth and Fourteenth Doctors, Whittaker was the first woman to take the role, and Capaldi played the Twelfth.

The season sends its three leads, Charles, Oliver and Mabel, to London to solve the murder of true-crime podcaster Cinda Canning. Tina Fey plays Canning. Deadline reports that the guest cast also includes Jim Broadbent, who recurs in the season. Broadbent once played an alternate Eleventh Doctor in Doctor Who: The Curse of Fatal Death, a 1999 Comic Relief special.

Tennant himself downplayed his part. He called it "the definition of a cameo", meaning a brief appearance, and said it was "a very small part."

The same interview turned to the future of Doctor Who. The BBC launched a competitive tender in September to choose the production company for Season 16. A tender is a formal bidding process, and this one is being run as a bake-off, in which rival companies pitch against each other before one is picked. According to Deadline, Jed Mercurio's Hat Trick Mercurio, STV Studios and, likely, two BBC Studios labels are in the running. The process is still ongoing.

Asked whether the show will survive, Tennant said Doctor Who "deserves to run forever." He also said its future "depends who gets it", meaning which company wins the tender.

For viewers, the immediate date to note is December 8, when Season 6 of the Hulu-free...

Nothing more has been confirmed about who will make the next series, and no date for Season 16 has been announced.