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From the liner notes

Only a stake through her heart could appease his appalling passion! John Stone, a mild American businessman, receives an odd inheritance in the mail: two bottles of ancient brandy which, unknown to Stone, also contain the blood of his ancestor, Count Dracula! Despite the foreboding of his wife, Helene, John drinks the brandy and, sure enough, slowly turns into a pasty-faced vampire. Worse, in addition to his newfound thirst for neck-slurping, Stone seeks revenge against the ancestors of those who killed the vampire king. However, when Stone murders an exotic dancer known as "Vivacious Vivian," Dr. Howard Helsing (of the famous Dracula-killing Helsings) takes notice, but not before Stone puts Helene under his spell. A Taste of Blood is a moody, modern-day vampire tale from cult director Herschell Gordon Lewis (The Wizard of Gore) who (as "Seymour Sheldon") also turns in an amusing cameo as a British seaman.