Why does a serial killer...well, kill? It's criminal profiler Sarah Rao's job to figure out the answer to this question and she thinks she's close. Confident that she can apply her skills to figure out the 'rules to catching a serial killer', she jumps headfirst into a new case. But the case brings with its usual blood and gore, a hefty dose of artistic flair. What happens when art flouts the rules and leaves Sarah grasping for order?