Continuity mistake: When Brian and Stewie arrive in Leonardo's atelier we know that they are in Florence for two reasons: because of history and because we see Palazzo Vecchio (which is in Piazza della Signoria, in Florence) outside the window. Then when Stewie and Bertram are fighting with Leonardo's flying machine the city of Florence is wrongly represented as if it was Venice, with the see, the lagoon and the canals.
And Then There Were Fewer - S9-E1
Continuity mistake: When the guests walk through the secret passage, the order of the guests change between shots. First, it's Peter, then Chris, then Carl, then Doctor Hartman, then Seamus, then Quagmire, then Lois. But in the shot of the passage, the order is Peter, then Chris, then Carl, then Lois, then Consuela, then Doctor Hartman. Then when they reach the secret room, the order is Peter, then Chris, then Carl, then Lois, then Bonnie, then Quagmire, then Derek, then Jillian. (00:20:00)
And Then There Were Fewer - S9-E1
Continuity mistake: As soon as the secret passage opens, the book that caused it to open disappears off the ground almost instantly. (00:19:25)
And Then There Were Fewer - S9-E1
Continuity mistake: Peter knocks out Joe during the search in the hallway. Yet when everyone is fighting about the motives, there is a wide shot of the fight but Joe can be seen fighting behind a couch with Doctor Hartman and Derek. He can't have regained consciousness, because he doesn't regain consciousness until later in the episode. (00:19:20)
And Then There Were Fewer - S9-E1
Continuity mistake: When Carl mentions Labyrinth to Tom Tucker and Diane Simmons, Meg can be seen at the other side of the table sitting in front of Joe. But when we next see Meg a few moments later, Doctor Hartman is now sitting where Joe was. (00:07:25)
And Then There Were Fewer - S9-E1
Continuity mistake: At the end when everyone is packing their bags and leaving, Jillian is sitting on a bench upset and Bonnie's hand is on her shoulder because Derek was killed. Her neck collar is missing, and her shirt strap is on the right side instead of the left side.
And Then There Were Fewer - S9-E1
Other mistake: When everyone is in the dining room after James Woods was killed, Derek and Jillian can be seen hugging each other a little bit, and Derek's left arm is missing.
Road to the North Pole - S9-E7
Other mistake: Cleveland's house, across the street from the Griffins, is absent in the opening overhead shot. Then the scene changes to inside, and we can see his house through the window.
And Then There Were Fewer - S9-E1
Continuity mistake: When Mayor West panics, Peter shakes him and he falls against a shelf. The plate on the end of the shelf falls off and smashes on the floor. But when Brian points out the gun is there, it is now the middle plate that fell off and the plate on the end of the shelf is intact. (00:15:25)
And Then There Were Fewer - S9-E1
Continuity mistake: Just after Stephanie is killed, there is an outside shot of the manor, where the weather is normal. Just 20 seconds later when they run outside to try and escape, it is suddenly pouring down. (00:10:40)
And Then There Were Fewer - S9-E1
Character mistake: When driving to the manor, Lois wakes up and says "Peter, look" as if she knows they are there. She could have not been able to notice this since the trees are blocking all view of the manor. (00:03:00)
And Then There Were Fewer - S9-E1
Continuity mistake: There are several differences during the flashbacks and what actually happened. Such as when Muriel is killed Diane appears with everyone else, but in the flashback she appeared moments later. Second, when everyone appears in front of Derek's dead body there are two differences, Tom doesn't say "Dear God!" in the flashback and Diane appears 1 second later in the flashback. Third, Stephanie doesn't say "Did the cork hit me?" when she is shot in the flashback. Fourth, Priscilla isn't wearing a scarf in the flashback even though when it actually happened she was wearing a scarf. Fifth, when Derek says he is going up to the roof he is standing next to Peter and Lois, in the flashback he standing next to Lois and Jillian. Sixth, when Derek leaves the dining room to go to the balcony, no-one is standing next to the door, but in the flashback Diane and Doctor Hartman are standing right next too the door. Seven, when Muriel is killed she is in the middle of a hallway. But in the flashback, she is killed outside Tom Tucker's room.
And Then There Were Fewer - S9-E1
Other mistake: When everyone is leaving the mansion after Stephanie was killed, 3 mistakes happen at the same time: Dr. Hartman came alone, but there is a person sitting in the front seat next to him. Derek is in the car he and Jillian came in when they got here, but he is alone. And Carl was getting into Herbert's Ice Cream Truck, which was in front of his own truck.
And Then There Were Fewer - S9-E1
Other mistake: When they are chasing Tom around the dining table, they huddle up in a circle. Everyone is looking at Peter talk, and when Doctor Hartman says "Damn, that is awfully risky," if you look at Carl's eyes, they clip outside their eyes to look at Hartman.
And Then There Were Fewer - S9-E1
Continuity mistake: The beginning of the episode shows the front of the house. A few seconds later Peter walks in the front door with mail even though he wasn't outside before.
Brian Writes a Bestseller - S9-E6
Continuity mistake: When Stewie answers the door, notice the doorknob. It's down further in just this scene, so he can answer it. The rest of the episode it's where it's supposed to be.
Baby, You Knock Me Out - S9-E5
Factual error: Peter gets a record a message card from Cleveland. He hears a conversation, hears him driving and get pulled over by a cop. Impossible since the card stops recording as soon as you close it.
Continuity mistake: During the AA meetings, Dr. Hartman's, Bruce's, and Tom's buttons switch sides between shots.
Continuity mistake: The buttons on Chris' and Peter's suits switch sides while they're at church. Also, when Lois goes to see Joyce after the news anchor's exposé, both women's buttons are a problem when the buttons do not change sides in the mirror's reflection. (00:04:00 - 00:13:30)
Continuity mistake: After Joyce reveals the secret on the news it soon cuts to Joyce sitting in front of the mirror at Quahog 5, and in the mirror's reflection we see the door behind Joyce opens at the real Lois' right side (blocking the lightswitch), but in the next shot facing Lois the door opens the opposite way (not blocking the lightswitch). (00:13:25)
Answer: Mort is Jewish, and Walt Disney was said to be antisemitic. So it would make sense in a Disney universe all the inhabitants would share his supposed beliefs.
MasterOfAll