Other mistake: Mac is leaving a message for Christine. There is a close up of his cell phone. The keypad on the phone has the numbers in the wrong order. On every phone in history the first row of numbers is "123". On Mac's phone it is "789", like a computer keyboard.
Character mistake: When Flack and Lavoto are in the car he says "I never would have pegged you as an undercover" but he already knew she was, she told him this when they first met in season 9 episode 1.
White Gold - S9-E14
Continuity mistake: When Mac and Danny are telling the pizza owner about his nephew's death, in a shot from the side the man's arms are by his side, then it cuts to the front and his hands are on his hips.
Factual error: Towards the end, Eva Mason blows up Leonard Brooks' flat in an attempt to kill him, by heating up gas from the stove using an uncovered light bulb. This wouldn't work as shown as the filament from the bulb would burn out before igniting the gas - and besides, a spark from the light switch would have ignited it first.
Continuity mistake: The dead body of a girl is in the autopsy room. There is a closeup of her face on a TV monitor. Her hair is wet and tucked under her head and the v-shaped stitches on her torso are reddish in color. Next shot her hair is spread out and the stitches on her torso are blueish.
Chosen answer: Probably to broaden the scope of the show's plot and give the audience a chance to see the characters in a different setting, People act differently at home from the way they do at their workplace. By the ninth season, the characters would have become overly familiar and predictable. It gives the writers a chance to do something different with them.
raywest ★