S1·E1 Pilot

A violent criminal shoots a police officer outside his station and then goes on a rampage. A chase erupts through the streets ending with numerous wounded and dead. The criminal is captured and dragged into the station, because there is also a sniper shooting at the police, where he consequently dies.

Did he die from his wounds or was he beaten to death by the cops?. His sister and a priest want to know the truth, and are determined to find it.