movie that predates the TV show

After several high-profile newspapers fire him for his difficult attitude, investigative journalist Carl Kolchak (Darren McGavin) finds a job following the police beat for a small Las Vegas publication. When Carl discovers a series of dead showgirls drained of blood with bite marks on their necks, the police hesitate to take the case any further, and his boss (Simon Oakland) wants nothing to do with the story, leading Carl to believe there may be a real vampire prowling the city streets.