Cold Murdering Bastards - S3-E2
Other mistake: When we see the Royal Gazette, with the misinformation about Washington's death, the 2nd column is repeated in the 4th column.
Continuity mistake: When Judge Woodhull is shot and falls to the ground, his and Abraham's positions keep changing depending on the shot. In one shot the Judge will be on his side, but on his back in the next. And Abraham has both hands on his father's wound, and in the next shot, one on his father's upper chest.
Hard Boiled - S2-E2
Other mistake: Simcoe is in a shop with several other redcoats. They are making jokes at him. He receives a package with a knife inside. While he is inspecting the knife one of the off camera soldiers that is joking makes the screeching sound from Psycho. I though I was hearing things at first and replayed it to make sure. (03:41:00)
Mercy Moment Murder Measure - S1-E7
Deliberate mistake: When Abraham throws the secret note into the fire, he crumples it up before tossing it in. But then we see a shot of the note lying open and flat on the log before burning. Not only would the note not be able to uncrumple itself, it shows no sign of being crumpled in the first place. This was obviously done deliberately so the audience could read the note one last time.