For five years, the "Fourth Monkey" killer (4MK) has terrorised Chicago. His signature is based on the "Three Wise Monkeys"—sending the ear, eyes, or tongue of his victims to their families in white boxes tied with black string. The Catalyst:
According to digital archivist forums discussing the "JD Barker El Cuarto Mono M4A UPD," the updated file includes three major improvements: jd barker el cuarto monom4a upd