Overview

• Ruby Sunday, portrayed by Millie Gibson, reappears in Doctor Who Season 15 Episode 4, 'Lucky Day,' now streaming on Disney+.
• The episode explores Ruby's adjustment to life after the TARDIS, focusing on her work with UNIT and a new relationship with Conrad, played by Jonah Hauer-King.
• A new alien threat, the Shreek, emerges, challenging Ruby and UNIT's capabilities while deepening themes of trust and resilience.
• Showrunner Russell T. Davies teases unseen flashbacks to Ruby's time with the Doctor in Season 14, adding narrative depth to her arc.
• Davies confirms Ruby's return in the season finale, promising her 'finest scene yet' and further development of her character.