They say the devil is a beautiful creature who lulls unsuspecting people into her orbit. The trouble is, what happens when the person hunting her falls in love with the soulless angel of death, a monster who couldn't possibly love her back? Doctor Alison DiLaurentis is sharp, a charming seductress. She is also a killer. Behind her eyes there is a darkness. Beneath her smile there are untold secrets. She thought she had everything figured out. But then Detective Emily Fields came into her life. Emily is hunting Rosewood's most notorious serial killer. She never expected to fall in love with her. What happens if the devil she has been searching for all along has the face of an angel...and the way to her heart? It's Dexter meets Grey's Anatomy meets CSI in this dark Emison AU. MATURE THEMES. POTENTIALLY TRIGGERING CONTENT.