Hellsing Episode 7: Duel

Hellsing Episode 7: Duel is the seventh episode in the Hellsing anime series. It was originally released in Japan on November 21, 2001 and released in English on November 15, 2003. The series is directed by Umanosuke Iida, from a screenplay by Chiaki Konaka, and produced by the Gonzo animation studio.

Plot Summary
Integra attends the funeral of her dead Hellsing commando subordinates after being forced to euthanize the dying Hellsing commando ghouls. As she and Walter try to figure out how to increase their manpower, Integra is invited by Enrico Maxwell to see her in a museum. Meanwhile, Seras Victoria and a Hellsing squad led by Mason Fox engage in battle against a vampire who turns the civilians in the London Underground into ghouls to hold them off. Anderson appears again and kills off the vampire and several Hellsing soldiers until Alucard intervenes.