Bloodsuckers (1972)

When a group of friends from London go searching for their missing friend Richard in Greece they find him connected to a trail of murders and under the control of the bondage loving, sado-masochist, sexy vampire Chriseis. Imogen Hassall brings all her busty charms to the role of evil Chriseis whose incredible melons feature prominently as she teaches her younger, shy, impotent student that there are many more ways than just sex to find pleasure. Ms. Hassall leads a brood of horny followers who love to indulge in all the various pleasures of the flesh. When the group finally catches up with Richard and Chriseis the chase is on. They are able to rescue him, but not before she can sink her fangs into his neck and turn him into a vampire. When they get back to England Richard is a changed man. Gone is the sad, sexually confused and timid man who left. Now he is confident, strong, virile and ready to sink his fangs and wang into any girl he has an eye for. As his friends try to stop him, Richard goes on a rampage leaving a trail of damage and orgasms in his wake. With plenty of blood, boobs and a twist of S&M, Bloodsuckers (1970) will have more than just your jugular vein throbbing.