Before he dies of his wounds, he reveals to his superiors that four prominent members of society – a government minister, a peer, a general and a famous scientist – are involved in a cult led by Chin Yang.

In order to avoid any reprisals by the minister, Secret Service official Colonel Mathews calls in Scotland Yard's Inspector Murray to work on the case independently.

The mentally unstable Keeley is involved in bacteriological research designed to create a virulent strain of the bubonic plague.

After staking her through the heart with a mallet, he destroys the other female vampires with clear running water from the fire sprinkler system.

The guard's metal baton smashes a computer panel, causing an explosion that starts a fire and unlocks the ritual room.

Two uninfected conspirators escape, Murray rescues Jessica, and the infected minister and the plague bacteria burn in the fire.

The part of Van Helsing's granddaughter, Jessica, was recast with Lumley; she had been portrayed by Stephanie Beacham in the previous film.

The screenplay, a mixture of horror, science fiction and a spy thriller, was written by Don Houghton, who had worked on Doctor Who.

[2]The film was eventually retitled, but was still marketed in French as Dracula vit toujours à Londres ('Dracula Is Still Living in London').

As movie historian Jonathan Rigby has observed, the feature "wrapped on 3 January 1973, 15 years to the day" after Dracula, the first film in the Hammer series, finished shooting.

[3] This was the last Hammer movie that Lee and Cushing would make together, although they would reunite one final time ten years later, for House of the Long Shadows.

The feature was not released in the United States until 1979, when Dynamite Entertainment distributed a heavily edited version under the title Count Dracula and His Vampire Bride.