Crystaline Snape, Severus's daughter, is a half-vampire. Chap5up 'Crystaline, what did you just do?' 'Nothing,' I lied insincerely. 'Right. And I'm King Richard III.' 'His majesty reveals himself at last.'
Acacia comes to live with her father at the end of Harry's fifth year. She, too was born at the end of July. So why didn't Dumbledore mention her? Did he even know that she existed? There will not be any major OoP spoilers until third chapter.
Harry, Ron, Hermione were in the restricted section where they found an interesting book. Soon, they were transported to… Das Land der Drachen.
Ginny Weasley was bitten a couple of summers ago by half vampire, thus becoming one herself. Her family doesn’t notice that anything’s changed, but when a new kid comes to stay with the Weasleys for the summer, everything changes.