Continuity mistake: After Spence and Kirby's arm wrestle, the way Spence holds the action figure keeps changing between shots. (00:51:10 - 00:51:55)
Continuity mistake: When Kirby says that Spence is scared of peanuts and calls him "The Scaredinator", his hands are empty and his arms are folded - then in the next shot he is instantly holding the red action figure again. (00:51:40)
No Retreat - S4-E5
Continuity mistake: During the opening scene in the backyard, Deacon finishes his beer and puts it down. In the next shot of Deacon he is holding the beer again. (00:00:10)
No Retreat - S4-E5
Other mistake: In the opening scene when Doug is cooking hotdogs for his friends, the smoke coming from the BBQ is very fake. (00:00:20)
No Retreat - S4-E5
Continuity mistake: When Doug tells Carrie at the start he is telling his jet ski story, the tongs he's holding swap hands instantly. (00:00:45)
No Retreat - S4-E5
Continuity mistake: When Horseback riding Doug is holding on to the straps with either one or two hands depending on the shot. (00:16:50)
No Retreat - S4-E5
Continuity mistake: When horseback riding, the track behind them is constantly changing. For example, when Doug hits the tree, the tree then vanishes. (00:17:40)
Continuity mistake: At the store, Doug picks up 5 or 6 bags of sweets. Most noticeable is 2 yellow bags. Camera cuts and they have disappeared. (00:01:05)
Continuity mistake: When talking about getting a pumpkin, Deacon knocks a toy onto the floor, When the camera moves back you can see the toy has gone. (00:01:30)
Continuity mistake: When Carrie is taking the shopping out of the bag, the items are constantly moving on the side without being touched. (00:03:30)
Continuity mistake: Arthur throws Doug's pumpkin out near the start and there is no pumpkin on the floor in the kitchen. A few minutes later in the scene, there is pumpkin on the floor in the kitchen. (00:03:40)
Other mistake: When Doug is saying that Arthur does nothing that Deacon just listed, there is a camera angle of him walking down the aisle with Deacon. In this camera angle only there is a blip to the top right of the screen. This little black mark stays in shot while the camera is moving and is only in this one angle. In other shots of the same angle the black mark is not present. Clearly something was on the camera lens during filming. (00:05:30)
Continuity mistake: When Deacon and Kirby are at Doug's the house over street is a mid terraced house in one shot, and an end terrace in another. (00:06:00)
Continuity mistake: When the nurse walks away from Doug, she walks away, camera cuts and she starts to walk away again. (00:07:25)
Audio problem: When the nurse compliments Doug on his costume, she taps him on the arm twice. However the sound is out of sync. (00:08:00)
Continuity mistake: When the doctor is explaining to Carrie what is wrong with Arthur, he has a stethoscope round his neck that keeps changing position between shots. (00:08:30)
Character mistake: The Doctor tells Carrie what's wrong with Arthur and what they are going to do. When he tells Carrie this, they are in a packed waiting room, completely violating patient confidentiality. (00:08:35)
Continuity mistake: When Arthur is talking to Doug in the hospital, the pillow behind Arthur keeps changing position. (00:11:00)
Revealing mistake: When Doug and Deacon are driving round trying to find Gabe's Pizzeria, they get into the car and pull out into the road. However if you look at the traffic, they would have hit at least 2 cars in doing so. But they don't, showing it's a projection. (00:14:40)
Continuity mistake: When scooping the ice creams for Arthur, Doug scoops pineapple, then banana, from the open case. He then finds lemon, but has to open the case again. (00:17:45)
Answer: Sara hasn't been mentioned in later episodes, and it suggested in later episodes that she never existed, and that Carrie is an only child. Kevin James stated that the producers couldn't think of an good plots to use with Sara, so they left her out.