Blood Donut - S1-E7
Visible crew/equipment: When Flores discovers her cell phone is missing from the hole in the wall she goes nuts, slams the stall door and kicks it in. After she is taken away there's a closeup of the stall and we can see the metal spring that was duct-taped to the bottom of the wall inside.
Absolution - S3-E21
Continuity mistake: On the security camera, Fitz yells at Simmons that she has a good memory, then asks, "I mean you do, right?" and then he starts to turn to look at the Primatives advancing on him. He's standing up straight, back against the wall with both arms down at his side. Then it jump cuts to a front view of him, and suddenly he's bent over with one hand planted back against the wall. (00:37:45)
Caperberries and a Fat Detective - S3-E17
Continuity mistake: When they're on the phone with Adam, between shots the phone switches hands.
Factual error: In the scene, Floki walks towards a small waterfall today known as Kvernufoss. Floki is supposed to be the only inhabitant if not the entire Iceland, at least the region, as we are shown no sign of civilisation whatsoever, and as historical record tell us about Iceland in the early 800s (as the events of Vikings seem to take place). But a well beaten footpath is visible, leading to the waterfall at the end of the canyon. That path is an oft-travelled path tourists follow nowadays to reach Kvernufoss, a well-known site in the area. A path like that in Floki's time would simply not have existed (there is nothing in that canyon but that waterfall, no reason to go there if not for sightseeing) and represents a (tiny) intrusion of our modern world in a show set in the middle age Iceland. (00:37:42)
Visible crew/equipment: When Marie goes to tell Reb about Allie seeing Lou in the showers, in a slow-mo shot of them both filmed through some bars, you can see a boom mic above Reb's head.
Continuity mistake: When Frank orders Peter to take off his clothes and get into the bathtub, he starts to unbutton the shirt putting the hand on the stomach at the end of the shot, but in the next one he's still seen in the mirror's reflection with the hand on the collar side. (00:46:35)
Factual error: Throughout the show bottles of liquor have sprout dispensers attached to them. Sprout dispensers were not invented until the 1960s.