Five Murders - By Jean Dulles, #1

Can the murder be prevented if the identity and methods of the murderer are known in advance?Charlotte encountered a murder while on vacation at the Dark House with her friends. Although the identity of the murderer was revealed and he was arrested by the police, the murder left an indelible shadow in Charlotte's heart. Next, a mysterious remote control takes Charlotte back in time - before the murder.
Charlotte, who already knew the identity of the murderer and his methods of committing the crime, decided to prevent the murder from happening. Unexpectedly, while Charlotte prevented this murder, it triggered another murder. Just like the butterfly effect, every change brings unexpected results. In order to save everyone, Charlotte conducted in-depth investigations again and again, and finally caused the situation to get completely out of control!