Producer Charles Band and director Ted Nicoloau's long-awaited Subspecies V: Blood Rise takes place during the Holy Crusades and shows how Christian knight Radu (Anders Hove) came to be the nasty vampire we know and hate from the earlier films.
For the fifth film in a franchise, it's not an entirely worthless effort: the origins story makes a nice change from the previous movies, which had become very repetitive, and Anders Hove puts in another solid performance as Radu, although his advancing years do make it hard to accept him as a younger version of his character (especially as the crusading knight - a little too old to be swinging a sword). Perhaps it would have been wiser for Hove to step aside and allow Radu to be played by someone new.
Overall, though, if you're a fan of the series, this one should prove entertaining enough and is better than I had expected. I rate Blood Rise 5.5/10 rounded up to 6 for IMDb.