A Christmas They Never Forgot - S8-E11
Character mistake: Caroline recalls a Christmas after her mother remarried after her father dies when she was about 12 years old. But in a previous episode Caroline's real father is visiting righting his memory book.
Suggested correction: The man you're talking about, from s06e11, "Author! Author!", was Fredrick Holbrook who was in fact Caroline's step-father, whom she grew close to and regarded as if he were her natural father.
A Christmas They Never Forgot - S8-E11
Continuity mistake: Every time they go outside during the blizzard, the keep talking about taking in wood, but yet the wood pile never changes throughout the whole show.