For readers who revelled in the toxic obsession of Butter and the addictive horror of Bat Eater Dear Jiwon, I'm writing to you regarding the murder of your son... Revenge is perhaps best served by letter. But letters get answered. And when a young tutor takes up the pen to write to her former employer revealing the true motive behind tutoring her son, she will trigger a chain of events that will leave you questioning everything - and everyone. Dear Jiwon, What's the first thing we learn as babies? Don't trust another person for no good reason. Even your own flesh and blood to whom you gave birth is no exception. After all, one's offspring are other people too. But how many times can I tell you to trust no one? Not even me. ---- Content warning: this book contains instances of animal abuse and death