Beast of Blood, released in the UK as Blood Devils, is a 1970 Filipino horror film. A sequel to The Mad Doctor of Blood Island, it was directed by Eddie Romero. It was the fourth 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 The Mad Doctor of Blood Island.: 63–88  It was also Romero's last film for Lynn's Hemisphere Pictures, as the two went their separate ways after this film was completed.: 77