I recall loving the novelization of HOUSE OF DARK SHADOWS.
I have actually seen that book before....
It is rumoured that there is a movie version in the works with Johnny Depp playing Barnabas.
I do recall the version from the early 1990s with Ben Cross as Barnabas. I felt the show never got a chance to really find an audience
On the subject of novelizations, a number of shows novelized their scripts inluding Days, Another World, Guidnig Light, ATWT and the Doctor Who Series
I have quite a few DW ones