2. There's a creepy face in a tree during the first episode.
3. Edwin Jenner's warning to Rick in the Season 1 finale is the title of the Season 7 premiere episode, in which Rick and his group meet Negan and reach their low point.
6. The Governor stumbles across a beheaded corpse with a sign nailed to it that reads "LIAR." In the next episode he says nothing but the word "liar" immediately before beheading Hershel.