¿Qué pasó con el bebé de Rosemary?

I'm a big fan of "Rosemary's Baby", so when I found out there was a sequel, I was ecstatic... until I actually saw it. I have heard people who read Ira Levin's sequel "Son of Rosemary" say that Levin could not have possibly come up with a worse follow-up story to his original; these people have obviously not seen this film. The fact that the movie refers to the coven as "the tribe" is all-telling. (A "tribe" of witches? Please!) The "tribe" eventually abandons Adrian as their Antichrist in favor of Adrian's son. (Why would the grandson of Satan make a better Antichrist than the son of Satan?) Even Ruth Gordon, whose brilliant performance in "Rosemary's Baby" won her an Oscar, is too old and senile in this film to be interesting. Put this on your must-skip list.