The Mad Doctor of Blood Island is a 1969 Filipino horror film, co-directed by Eddie Romero and Gerardo de Leon, and starring John Ashley, Angelique Pettyjohn, Eddie Garcia and Ronald Remy.: 83 It was the third in a series of four Filipino horror films produced by Romero and Kane W. Lynn known as the "Blood Island" series, which also included Terror Is a Man, Brides of Blood and Beast of Blood. Beverly Miller was associate producer on this film, and later went on to co-produce several other Filipino horror films. This film dared to go a step further than Brides of Blood in the nudity and gore department.: 72 The plot involves a man traveling to an island where a mad scientist named Dr. Lorca is creating human/ plant mutants with chlorophyll blood out of the local natives. The film was later syndicated to television as Tomb of the Living Dead. It was also briefly known in certain states as The Mad Doctor of Crimson Island.