The Case of the Deepdean Vampire

Of all the mysteries that Hazel and I have investigated, the Case of the Deepdean Vampire was one of the strangest. It was not a murder, which was a pity - but I did solve it very cleverly, and so I decided it ought to be written down, so that other people could read it and be impressed.
Camilla Badescu is in the fifth form, and has pale skin, dark hair and red lips. She comes from Romania (which is practically Transylvania). She doesn't eat at meals. And she seemed to have an unhealthy influence over another pupil, Amy Jessop. Now, I do not believe in vampires - I am the Honourable Daisy Wells, after all. But when I heard the rumour that Camilla was seen climbing head-first down a wall, I knew it was time to investigate...