When a 14 year old Australian exchange student arrives in Sunnydale, Buffy Summers is asked to look after her. But something about this girl is......unnatural and mysterious. Around the same time she arrives, three guys also arrive, who happen to know a lot about the supernatural world. Teaming up together, Buffy and the Winchesters plus their angel (Cas) investigate this girl, using Spike, Angel and Giles as their main reliable resources. But can Buffy trust Spike enough to get information out of him? And can she hold her emotions intact around Angel when figuring this mystery out? Or will she fail? And are the Winchesters and Cas going to trust the vampires? (My original story: http://www.quotev.com/story/6307787/The-Exchange-StudentA-Buffy-the-Vampire-Slayer-and-Supernatural-Crossover-Story/ )All Rights Reserved