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.
Guest Stars
Jon Seda
Antonio Dawson
Marlyne Barrett
Maggie Lockwood
Li Jun Li
Julie Tay
Landree Fleming
Jenny Barcles
Al'Jaleel McGhee
Bird