Quiet Night, Deadly Night - S5-E4
Character mistake: Nils is playing checkers with Mark. Nils calls him "Mark" then "John." (00:20:35)
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Suggested correction: He says "now", not "John." After he Mark says he remembers it like it was yesterday, Nils says "go on, it's your move now."
Other mistake: You can see a plane taking off between the leaves of a tree and into the opening as it passes the tree, while Mark and Lucas are talking. (00:22:15)