Iris is a young detective who is located in London. She considers herself a normal woman but her family belongs to the top crime investigators within the country. But one day a series of murders start across the city. They all have a similarity with one of histories most famous serial killers: Jack the Ripper The city slowly falls into chaos and Iris' family seems to be involved, but how? As Iris tries to solve the mysteries around the murders and her families past, she discovers that she doesn't hunt alone. An unknown friend sends her letters in order to save London from the copycat.