Ep 9. The Empty Child

The Empty Child is the ninth episode of Doctor Who's first season in its 2005 revival. It takes place in London during the Blitz and introduces a new enemy, the titular Empty Child.

The episode begins with the TARDIS arriving in wartime London, where the Doctor and his companion Rose soon find themselves separated. While Rose helps with the war effort as an ambulance driver, the Doctor investigates strange reports of people being turned into gas-masked monsters asking "Are you my mummy?"

It's not long before the Doctor crosses paths with a young woman named Nancy, who is trying to care for a group of orphaned children - including one who seems to be the source of the strange phenomenon. As the mystery deepens and more people become infected, the Doctor must work with Nancy and her fellow survivors to find a solution before it's too late.

The episode is known for its eerie and unsettling atmosphere, as well as its emphasis on character development and emotional stakes. It delves into themes of family, abandonment, and trauma, while also leaving plenty of room for humor and adventure.

Overall, The Empty Child is a thrilling and poignant addition to Doctor Who's ongoing story, showcasing the show's ability to balance scares, heart, and sci-fi spectacle.