Aubrey Morris (Dr. Winchester) played a similar role in Blood from the Mummy's Tomb (1971), which was also based on the Bram Stoker novel.
Portia Doubleday's debut.
It is mentioned that Margaret was separated from her father for two decades at the age of 7, which would make her 27 years old. Amy Locane, who played Margaret, was 27 years old when this movie was released.
Eric Lutes's and Richard Karn's TV series, "Caroline in the City" and "Home Improvement", respectively, both ended in 1999, a year after this film's release.