A small town doctor mistakenly ingests an experimental drug made from the blood of vampire bats which transforms the kindly medic into a bloodthirsty monster. Paul Landres, Marty Moss John Beal, Coleen Gray, Kenneth Tobey, Lydia Reed, Dabbs Greer, Herb Vigran, Hallene Hall, Paul Brinegar, Raymond Greenleaf, Ann Staunton, James Griffith, Wood Romoff, Brad Morrow, Mauritz Hugo, Anne O’Neal, Louise Lewis, Arthur Gardner tt0051150