Ghosty hunter

From Tardis Wiki, the free Doctor Who reference

The term "ghosty hunter" was an unofficial term that referred to a group of people who hunted Ghosties in the late 21st century. By the year 2069, prejudice against Ghosties was common and they were frequently hunted. Freda, who was half-Ghosty once had her home set ablaze by these people, and she escaped by being sent through the Cardiff Rift to 2009 by Torchwood. (AUDIO: Asylum)