Insomniac

The midnight radio host always reads letters in code, and is nicknamed the "Insomniac Code" by the audience. The criminal police tracked a serial case that had not been solved for ten years and found that the victims had clicked on "To the Oak" read by the anchor before they were killed. After a raid on the live broadcast room, the host was seen choking into an empty microphone: "Sister, you were the only one who heard my cry for help due to domestic violence... Now it's my turn to read poems for all the people asking for help." She opened the drawer and found a stack full of letters - each letter was a secret request for help that could not be identified in the police files.