It’s been less than two years since Rwandan-Scottish actor Ncuti Gatwa was unveiled as the 15th Doctor in BBC sci-fi Doctor Who.
But now there are reports that he’s set to hang up the sonic screwdriver after just two series - with no third season yet confirmed by Disney and the BBC, who co-own the frachaise.
The rumours have inevitably led to speculation about who will be the next actor to play the Timelord.
Here are the 9 favourites, according to the bookies.
5. Omari Douglas - 6/1
Best known for his role in Channel 4 drama It's a Sin, Omari Douglas has been nominated for a British Academy Television Award and a Laurence Olivier Award. He's a 6/1 shot to take on the Doctor next. | Getty Images for Disney
6. Lenny Henry
Comedian Sir Lenny Henry has taken on a series of weighty acting roles in recent years, from Shakespeare productions onstage to everything from Broadchurch to The Lord of the Rings: The Rings of Power on the small screen. He's 9/1 to add another impressive section to his CV. | Gareth Cattermole/Getty Images
7. Michaela Coel - 10/1
The first black woman to win the Emmy Award for 'Outstanding Writing for a Limited Series, Movie, or Dramatic Special' for I May Destroy You, Michaela Coel also created and starred in E4 sitcom Chewing Gum, winning a BAFTA Award for Best Female Comedy Performance. It's 10/1 that she'll be getting to grips with a sonic screwdriver soon. | Getty Images for GQ
8. T'Nia Miller - 12/1
Another former Doctor Who cast member - she played The General in 2015 episode Hell Bent - tipped to return in the main role is T'Nia Miller. She's previously starred in a string of big TV series including Witless, Years and Years, Free Rein, The Haunting of Bly Manor, Foundation, and The Fall of the House of Usher. She's priced at 12/1, | Getty Images