Vault of Horror #22

Eileen responds to a newspaper ad asking for a traveling companion for a heavily veiled Madam DuBois, who is traveling abroad, even though her brother Ken is not too happy with the idea. Then she and Madam DuBois board a cruise ship. Unfortunately, Eileen mysteriously passes away, and Ken investigates. A shipboard doctor informs him that Madam DuBois is similar to a human vampire, who prolongs its life by sapping the youth of their victims. By the time the pair get to DuBois' cabin, her next victim is already withering and dying before their eyes!