Starring: Nathan Fillion, Richard T. Jones, Alyssa Diaz, Titus Makin Jr.
Warriors and Guardians - S2-E4
Other mistake: The driver in the blue Mustang (Osito) drives past Nolan and Harper, then makes a u-turn and drives past them again, to Nolan and Harper's left (same direction he came from), but when Nolan and Harper go to chase him, they turn right instead of left. (00:31:15)
Revelations - S3-E6
Continuity mistake: When Tim puts Lucy in the squad car after "arresting" her, the rear door on the driver side is open, but when the camera pans back to her it's suddenly closed without making a sound.
The Hammer - S6-E2
Nolan: Sorry I had to bail on our wedding reception.
Bailey: You didn't miss much.
The Choice - S5-E4
Trivia: We see Bailey and her team of firefighters arrive at the house on Engine 118, which is the same engine that Captain Nash is in charge of on 9-1-1, also set in Los Angeles.
Question: Every episode when the officers set up their "shop," they take two "war bags," a shotgun and a non-lethal shotgun. Why is the non-lethal shotgun never used?
Answer: It's been used several times. Nolan's first T.O., Bishop, used it during a home invasion call for one example.