From 1987 to 1991, a serial offender known as “Mr Cruel” abducted children around Melbourne, Australia. He usually held his victims captive for a period of time and then released them, but he’s suspected of abducting and murdering 13-year-old Karmein Chan in 1991.

One of the most terrifying aspects of the case is the sketch of his mask, made with the assistance of survivors who caught a glimpse of him. We’ve been given a hi-resolution copy to share, which you can view by clicking below: