Factual error: FBI only deals with federal crimes. They would not be involved in minor drug offenses.
City on a Hill (2019)
1 factual error in show generally - chronological order
Starring: Kevin Bacon, Aldis Hodge, Amanda Clayton, Lauren E. Banks
What They Saw in Southie High - S1-E2
Other mistake: Agent Rohr asks who the cold case is related to. A dossier is given to him and the front cover contains a photograph and the name "Kanicki, K". Agent Rohr says "Kelly Kanicki" but there was no indication of the full name, just the initial. (00:08:30 - 00:09:00)