Revealing mistake: When they are spearing fish near the start, a water drop goes from the water to the spear, showing that it is reversed. (00:04:34)
Vikings (2013)
1 revealing mistake in season 1 - chronological order
Factual error: A crosshead screw is attached to Ivar's frame. (00:11:21)
Bjorn: What are you so afraid of? It's only death.