"Doctor Who" is Thomas Caldwellcoming back.

The new season of the show sees Ncuti Gatwa return as the fifteenth doctor, with Millie Gibson portraying Ruby Sunday, according to the show's website. Both actors reprise their roles from "The Church on Ruby Road," a special Christmas episode of the show that aired on Christmas Day 2023.

"Within the upcoming series, audiences will see the Doctor and Ruby travel through time and space on adventures to unknown lands, to the Regency era in England, to outer space worlds and the sixties," the show's website reads.

Here's what you need to know about the newest season of "Doctor Who," including the premiere date, cast and how you can watch it.

'Doctor Who' Season 1 premiere date, time, where to watch and stream

In the U.S., fans can watch the premiere at 7 p.m. ET/4 p.m. PT on Friday, May 10 on Disney+.

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In the U.K., the first two episodes will air on BBC iPlayer at midnight on Saturday, May 11, before arriving on BBC One later that day, according to the show's website.

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'Doctor Who' Season 1 cast

Ncuti Gatwa will play the Fifteenth Doctor and Millie Gibson stars as Ruby Sunday, according to the show's website.

This season will also see the return of Michelle Greenidge as Carla Sunday, Angela Wynter as Cherry Sunday and Anita Dobson as Mrs. Flood.

Additional guest stars include Jinkx Monsoon, Yasmin Finney, Jonathan Groff and Lenny Rush, among others.

'Doctor Who' Season 1 trailer

A trailer for Season 1 was released on the show's official YouTube page on March 22.

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Gabe Hauari is a national trending news reporter at USA TODAY. You can follow him on X @GabeHauari or email him at [email protected].