Several days in succession heart attack victims are discovered to have small marks on their necks. Friendly Dr. Beecher, out of character, has bouts of moodiness; and and he realizes he may be responsible for the series of heart attacks that have become murders. Watching the doc transform into a vampire is of course the movie's highlight. This flick is well acted and written by Pat Fielder and directed by Paul Landres. Some scary moments and that wonderful B&W atmosphere.
Rounding out the cast: Colleen Gray, Dabbs Greer, Kenneth Tobey, Lydia Reed and James Griffith.