Chapter Sixty-Eight: Quiz Show - S4-E11
Other mistake: Archie's uncle Frank tells Archie during an argument with him that he is 40 years old, with seven years in combat while in the military. But in a previous episode when explaining why he let Fred take the blame for his DUI, he claimed that he was a Desert Storm veteran in between tours at the time. Either the show got the wars wrong and meant to say he was an Operation Enduring Freedom or Iraqi Freedom veteran (no actual veteran uses "Desert Storm" when referring to combat in the Middle East after 9/11) or they're saying that he was only 10-11 years old when he went to Desert Storm. (00:29:30)
Chapter Seven: In a Lonely Place - S1-E7
Other mistake: Marisol Nichols is listed twice in the opening credits, while Madelaine Petsch isn't listed at all.
Chapter Eighteen: When a Stranger Calls - S2-E5
Other mistake: When Betty receives the call from the unknown number, her iPhone rings audibly. When the program shows a closeup of her iPhone, the mute switch is down, meaning the phone is on silent. (00:15:25)