Nightmare in Blood (1978) is a Comedy, Horror film that follows attendees at a horror-film convention in San Francisco keep disappearing. It turns out that the guest of honor is a real vampire, and his henchmen are kidnapping the convention guests. A horror writer, a Sherlock Holmes fan and an Israeli Nazi-hunter set out to stop him. Currently, you can watch Nightmare in Blood on Amazon Video, Google Play Movies, YouTube. Streaming availability may vary by country and platform over time. It has a user rating of 5.7 out of 10 from 6 votes. Fans of comedy movies may also want to explore similar titles below.