Chicago P.D. - Season 4 Episode 4 Big Friends Big Enemies
A car plows through a crowd outside of a concert venue and is followed by gunfire, sparking fears that it may be terror-related. Burgess spots Atwater's brother where he shouldn't be. The team works to bring peace to the community before more blood is shed.
- Genre: Crime, Drama
- Studio: NBC
- Keyword: chicago, illinois, police, spin off, crime investigation
- Cast: Jason Beghe, Tracy Spiridakos, Marina Squerciati, Patrick John Flueger, Benjamin Levy Aguilar, LaRoyce Hawkins