As I think I've mentioned before, I'm not a huge fan of the BSC Mysteries. But this one is better than most.

Kristy is hired to look after Derek Masters on the set of a television movie being shot in Stoneybrook - Little Vampires. Suddenly things start going wrong, with accidents occuring whenever Derek is around. The Baby-Sitters decide to solve this mystery, to protect Derek and make sure that the movie can be finished.

Derek is a good character, and I like seeing him back again. Kristy seems a more natural choice for narrator than some of the mysteries - she's the type to want to solve problems when they occur. The movie idea is sweet, though I spotted the 'baddie' miles away. ( )