After an elongated hiatus, The Rookie is back with season 7, and following a chaotic sixth season, viewers must prepare for the new episodes by remembering everything important that happened in the past. The ABC police procedural series, created by Alexi Hawley, revolves around a group of law enforcement officers, including Nathan Fillion’s John Nolan. At the beginning of The Rookie, Nolan was a middle-aged rookie who moved from the East Coast to Los Angeles after a divorce. Now, Nolan is the one training rookies.

https://screenrant.com/the-rookie-season-7-things-to-remember-list/