Continuity mistake: In her rooftop fight with Tommy, Batwoman opens with a batarang, then sends him face down kicking him from behind. They wrestle some, and the railgun goes off once. In a wide shot when she punches him in the midsection a few times while he is trapped in an armlock, you can see the gun on the ground. He had it in hand in the previous shot and is still in his possession later. (00:35:00)
Continuity mistake: In s02e09, "Enter the Dragon", when Father Jun shoots the second Irishman, he's holding the pistol with both hands. But in the next shot, he's back to holding it with one hand.
Continuity mistake: Agent CG is having her morning jog and there's a sizeable sweat spot on her top. That is, until she gets to the park for her scene with Mr. Master of disguise himself captain Fletcher: at that point her sweat stain reduces size considerably. (00:09:45)
Continuity mistake: When Nick's mom tells him to show Gypsy around she takes the cigarette away from her lips. A shot later it's back in.