Factual error: It is repeated several times the Diyoza was a Colonel, but then proceed to say that she was a Navy SEAL. The rank of Colonel doesn't exist in the Navy. She would be a Captain O-6.
Continuity mistake: When Clark walks into the hall full of dead grounders and it shows her looking at them. A guy on the right moves his head slightly as if getting comfortable. (00:18:50)
Revealing mistake: While Echo, Monty, Harper, Bellamy and Emori are heading back down to earth, you'll notice that Emori's face tattoo is on her right side of her face rather than her left.
