When Zelmare stabs Loy in the back, she has her hand firmly grasping his forearm, and does not remove it. In the following shot where he falls and hits the window, her hand is gone and her reflection in the window shows no movements of withdrawing it.
(at about 25m) There are cell phone towers on top of the cold storage building, 5G to be exact.
Around the 26m9s mark when six characters are supposed to be alone in the woods, you can see people moving from right to left behind background trees and bush.
S4. When they pan around, on top of the cold storage building you can quite clearly see some type of phone transmitters. Like 5G type of relay tower.