Volume four wasn't quite as entertaining as the earlier volumes I think in part because Courtney seemed much more gullible in this one than she had in all of the three earlier volumes, which made little sense. Admittedly she was charmed by a boy, but having gone through what she'd been through previously, you'd think she'd be less inclined to fall for something instead of more so. And yes, she was feeling disgruntled (her gruntle had never been so dissed in fact), but it made her look limp and weak in comparison to how she'd appeared in earlier volumes. Ideally this would have been the first volume. That would certainly have made more sense in terms of her personal growth and would have explained a lot about her attitude in the other volumes.
That said it still made for an enjoyable read and I commend it as worthy. This story involves Courtney's visit, with her great uncle who is sometimes not so great it has to be remarked, to a family chateaux which of course is occupied by vampires, one of whom is mature and very old (although she looks in her thirties), and the other of whom is around Courtney's age, but also very old. So Yuk! The mature one is an old flame of Aloysius's evidently, and plays very little part in the story. It's the young one who charms Courtney and wins her confidence, and at first she wonders if he's a ghost, but when she realizes he's solid, she changes her view. Even when she suspects he's a vampire though, she trusts him and that trust is misplaced.
He bites her three times over the next few days, which is supposed to either be fatal or seal her fate as a vampire, but this is where the story let me down because the ending was a complete fizzle! I couldn't say if the vampires were destroyed because the panels where Great Uncle Aloysius did battle with them were not exactly categorical, and would a blood transfusion save Courtney at that stage? I dunno, but the book ended without giving any sort of an answer. It begs the question as to why her uncle even took her there is there were vampires and if he still insisted, why he didn't provide her with some magical protection against them.
So while the story was entertaining and I commend it, I have to say the ending was poorly done and a sad way to end such a sterling series.