Dizi Adı: Threshold
Bölüm Adı: Vigilante
Sezon/Bölüm: 1. Sezon 12. Bölüm
Yayın Tarihi: 25 Oca. 2006

When a number of infectees and seemingly innocent people are killed, it becomes apparent that someone is going after people affected by the alien signal, and is locating them via their heightened brain waves. How is the killer linked to Bighorn crewman Manning, and does his method of finding his victims mean that Molly, Cavennaugh or Lucas could be next on his list?