Jar of Hearts has an intriguing cover that draws you in to what looks like a dark and chilling serial killer novel. The idea of an escaped serial killer ramps up the tension as whereas most books of this genre detail the hunt for an unknown culprit, here we have a convicted criminal who is already known to the police. How many will fall prey before he is caught and will he achieve his ultimate aim before his killing spree comes to an end? This looks like being a tense read!