Other mistake: Gus is talking to his employee about the twins while writing something on a clipboard. However, he is using the opposite end of the pen and just pretending to write. (00:14:40)
Other mistake: Abel was 18 months old when Thomas was born. All through the series, Thomas hardly ages. In season 7 Abel is 5 and in kindergarten yet Thomas looks younger than 3. He's not even walking or talking yet! Thomas should be at least 3 years old according to the time span of the series.
Other mistake: Carrie the assistant brings Lisbon and Jane to Stutzer's office. She swipes her card to open the door. However, she does this upside down, swiping the bar-code instead of the black magnetic strip, on which she is holding. (00:09:30)
Home for the Holidays - S11-E1
Other mistake: Only one set of prints were said to be on the garrote but in the last episode of season 10 Graham handles the garrote before handing it over to the murderer without wearing gloves. So there should have been 2 sets of prints.
Other mistake: The song 'Happy birthday' by 'Altered images' wasn't a hit until the autumn of 1981, and couldn't have been played at the boat party.