================================ A child genius who went on to become a successful detective, and that before the age of eighteen? You, [Name] Holmes, reached lenghts no one has ever thought of as possible. Beside trying to finish school you investigate crime and dodge public judgement of your early career start, on the daily basis. You were dealing pretty well with it so far, but that is until a very special case is requested to be specifically investigated by you. The criminal leaves notes at the crime scenes, all expressing their fascination for you. Can this strange case truly be linked to the infamous syndicate? And can you find out the true identity of the criminal before it's too late? Maybe some things are better to be left in the shadows... ================================ > Platonic! Dark Sbi × Gn! Teen! Reader Detective AU >⚠️General warning for portrayal of violence, gore and unhealthy relationships