Conway was surprised. "So you think that was magic because there was no reason for it,' he said. "But you're a doctor, aren't you? You don't believe in magic, do you?' 'Voodoo is more than magic. I don't believe in magic, but I know that voodoo can be very dangerous. I want to understand how it works. Here in Haiti there are still a few people who know how to use voodoo. They are called "houngans". There are still a few "houngans" in the villages in the country. And that's why I'm here. I want to meet some of them and talk to them. Of course they aren't all bad people. They can use voodoo to help people, like doctors. But they can use it to hurt people too.