Doctor Who fans have shared a theory about Billie Piper’s role in the show as she made a shock return at the end of the season two finale where she appeared to replace Ncuti Gatwa.
The 42-year-old actor famously played Rose Tyler, the companion for both Christopher Eccleston and David Tennant’s tenures as The Doctor. She played the role on a regular basis between 2005 and 2006 and was a supporting character during the 2008 season as well as making a cameo in the 2010 New Years special “The End of Time”.
