They told her she was sick. Disabled. Cursed, even. However, Manyara Henderson is able to do what none them can- see: an entire intelligent species only ever spoken of in Islamic Mythology called the 'Jinn', living amongst us. When she meets another person who 'sees', Manyara finds that her ability might not be as good as she presumed. Like any intelligent species, there are wicked individuals amongst the Jinn who would do whatever it takes to get what they desire.
And this desire? Is someone's life.