Cassandra Wilcox didn't believe in the devil. It seemed harmless enough to play along for a time, but then things started to happen, strange things that Cassie couldn't explain. What seemed like a harmless flirtation became a struggle to survive, as Cassie chases a mysterious key that everyone wants, even though no one knows what it opens. With the clock running out, Cassie must rely on Nick, but can he be trusted? If she does find the key, where will it take her? What exactly is the fate that destiny has prepared for her?