Doctor Who Boss Teases Ruby Sunday's Return — Including A Never-Before-Seen [Spoiler] Scene

Ruby Sunday resurfaces Saturday, when the fourth episode of the new Doctor Who season streams on Disney+.

In the episode "Lucky Day," we see Ruby Sunday (played again by Season 14 companion Millie Gibson) face life back on Earth without the Doctor (Ncuti Gatwa) in her orbit. Then, when a dangerous new threat emerges, Ruby works with UNIT to save her new boyfriend, Conrad (World on Fire's Jonah Hauer-King), from its terrifying power.

"Lucky Day" represents "a chance to find out what happens to a companion once you leave the Doctor's life," showrunner Russell T Davies tells TVLine. "What happens to your life? And also, will you ever find a man you love as much as that man? What boyfriend is ever going to live up to that?"

It helps more than a bit, though, when said beau is played by Hauer-King, whose credits including playing Eric to Halle Bailey's Ariel in 2023's live-action The Little Mermaid.

"He's just wonderful," Davies enthuses. "How could you not cast that man as a romantic lead?"

Beyond that existential question of filling the Doctor-shaped hole in her heart, Davies reminds that Ruby at the end of last season "left the TARDIS to find her own life. She'd just discovered her [biological] mother, a family she never knew she's had, so to have a whole episode focused on her is a compliment to how much we love Millie [Gibson]. There aren't many 19-year-old actors you could give an entire episode to, and this is that for her."

The show is Doctor Who, however, so "we find inventive ways to weave the Doctor in," Davies promises, adding: "There's a glimpse of the Doctor/Ruby story we never saw before," set during Season 14. "It's very, very clever."

As TVLine previously reported, "Lucky Day" is not Gibson's only appearance this season.

"She also does come in in the finale, and we get the absolute joy of Ruby and [new companion] Belinda (played by Varada Sethu) together," Davies previews. What's more, "Millie has a scene toward the end of the finale that's absolutely her finest scene yet."

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