Although this movie sports the cool word "slaughter" in its title, this movie is very much the old Dracula story all over again (with only a minor twist at the end). While there are a few differences (such as the vampire looking pretty weird--a bit like a blond Liberace with raccoon eyes) as well as more cleavage than usual, the essence of the film is the same old same old--though the names have been changed. Although there is no one named Van Helsing or Nina Harker, the characters are still there but with different names. The biggest difference is that the entire first portion of the book and original movies is absent--and it begins later in the story. The only serious negatives are the silly music (which might have sounded better in a sci-fi flick) and the silly look of the vampire. Because the story is so similar and there isn't any new innovation to make it memorable, this is a story horror fans don't need to rush out to see, as the Bela Lugosi and Christopher Lee versions cover the same territory but do it much better.
By the way, there were some complaints about the dubbing, though for a 1960s import, the quality isn't bad (except for the little girl--which sounds like an adult trying to sound like a girl). The voices seem appropriate and it wasn't a noticeable problem. Still, like many viewers, I would have preferred this to have been subtitled instead of dubbed into English.