Continuity mistake: The BMW 5 Series equipped with the dirty bomb you see in the beginning of the show is one of the 'F10' type. The car that actually explodes is another car. Possibly an older 5 Series 'E34', but not an 'F10'. Later in the episode you see the F10 again, but when the FBI agent starts the BMW, the interior of an 'E60' BMW 5 Series is shown. (00:00:30)
Continuity mistake: Agent Keen breaks the train window and dives through the broken glass and cuts her face in two places as she pursues the young man. Her two cuts alternate throughout the following scenes on the train from dripping blood to barely scratches. That evening at home with her husband her face is practically clear and at Reddington's home later that evening her skin is perfect.
Continuity mistake: When Agent Keen attacks Craig in his hotel room he pushes her to a rectangular shaped mirror on the wall but when Red enters the hotel room they zoom in to the same mirror, which is now square.
Mako Tanida - S1-E16
Continuity mistake: After Mako Tanida gets Agent Raim, the camera shows his pant leg with a visible tear in it exactly where Tanida later cuts it with his blade. (00:01:27 - 00:02:15)
Continuity mistake: When the plane is about to land the landing gear is deployed. After the abort order, the plane flies low over the landing strip, and the landing gear is up. When it ascends the landing gear is deployed again. (00:34:40)
Continuity mistake: When Agent Keen first finds Tom's blue key in the base of the lamp she places it on the whiteboard in her op centre, however when she realises that she has to play along with Tom, she is seen putting it back when it was in the base of the lamp. The next time she takes it, it is back on the whiteboard again.