The Horror of Blackwood Castle (1968) is a Crime film that follows scotland Yard must discover why people are being murdered by a monstrous dog at Blackwood Castle. Currently, you can watch The Horror of Blackwood Castle on Amazon Video. Streaming availability may vary by country and platform over time. It has a user rating of 6.4 out of 10 from 28 votes. Fans of crime movies may also want to explore similar titles below.