The Serial Killer Actually Has a Dual Personality

When sorting out my father's belongings, I dug out an old camera from twenty years ago. After turning on the phone, the screen lit up, filled with photos of strangers being beaten. In the last photo, the father is holding a piece of paper saying "Save Me" with desperate eyes. An anonymous message popped up: "Your dad sent me three photos before he died." "This is the first one. The second one is in your attic." Trembling, I climbed up to the attic and dug out the second photo from the bottom of an old wooden box. In the picture, the father was chained and looking at the camera in horror. The phone vibrated again: "The third one is on the mattress sandwich in your bedroom." The moment I lifted the mattress, I saw my father's throat slit in the photo. The reflection of the person who took the photo is actually my mother who has been dead for ten years.