Count Dracula and His Vampire Bride

Secret Service agent (Maurice O'Connell) barely escapes from an English country house, in which satanic rituals are celebrated. 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 the cult, led by Chin Yang (Barbara Yu Ling). Photos of the four dignitaries taken by the agent are developed, and a fifth photo, apparently showing an empty doorway, is assumed to be a mistake. In order to avoid any reprisals by the minister, secret service official Colonel Mathews (Richard Vernon) calls in Scotland Yard's Inspector Murray (Michael Coles) to work on the case independently. Murray (who had appeared in the preceding Dracula film) suggests consulting noted occult expert Professor Lorrimar Van Helsing (Peter Cushing).