The Doctor reunites with Tegan on her 46th birthday as he discovers there's something from the past that's signalling the future. Meanwhile, Tegan's friend Katherine Chambers reunites with The Doctor, but he doesn't recognise her and she'll make a decision that will change both her and Tegan's lives

The talented actors totally transform for their roles. How many do you recognize?

Greatest Character Actors of All Time

"[link=/title/tt5875444]Slow Horses[/link]" and "[link=/title/tt22091076]High Potential[/link]" return with new seasons this month. Check out our [link=/list/ls4103534970/]September calendar[/link] for more!

September 2025 TV and Streaming Premiere Dates

&quot;<a class="ipc-md-link" href="/title/tt5875444?ref_=tt_eds_right-5_lk">Slow Horses</a>&quot; and &quot;<a class="ipc-md-link" href="/title/tt22091076?ref_=tt_eds_right-5_lk">High Potential</a>&quot; return with new seasons this month. Check out our <a class="ipc-md-link" href="/list/ls4103534970/?ref_=tt_eds_right-5_lk">September calendar</a> for more!

Check out our gallery of the 33 first-time performer nominees this year, as the characters they so brilliantly played and in real life.

The Gathering

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