Black Lipstick and Ten Letters

Another victim in the big city, another case to solve. Detective Alice Hope arrives at the crime scene and finds yet another body, another person to identify and another criminal to catch. Things take a turn when Alice finds a note in one of the victim's pockets. A note addressed to her. What is the meaning of this? Who is the author of the strange message and why did they use black lipstick as signature.. Alice follows the clues from the letter and soon finds out that from the hunter, she has become the prey.