A deadly foe reemerges in the Ghost River Triangle, intent on finishing what they started putting everyone in Purgatory on alert. In this Parade.com exclusive clip from the episode, Rachel (Martina Ortiz-Luis) looks to Wynonna (Melanie Scrofano) to train her. Wynonna Earp airs Friday at 10 p.m. ET on SYFY. Next, 21 Canadian TV shows you need to stream