Continuity mistake: When Katie comes in to talk to Gracie, before leaving, the dog is resting its head in Grace's lap. In the next shot, from behind the couch, we can see the dog's head, meaning it's no longer in Grace's lap.
Colony (2016)
1 continuity mistake in Zero Day
Starring: Josh Holloway, Sarah Wayne Callies, Peter Jacobson, Isabella Crovetti
Sublimation - S2-E3
Continuity mistake: In the beginning, after the attack, when the guy is shot in the head, his left arm is crossed over his body (and stays that way after being shot). When the camera angle changes, his left arm is now lying flat on the ground.