Grasping for Salvation Chicago P.D. : Season 4 Episode 20
TV-14 NBC 43m int(0)
Aired: April 26th, 2017 @ 10:00 PM EST on NBC
While investigating the murder of a teenage boy, Voight finds a connection with the murder weapon - linking it to a case that he worked on 17 years ago. While the victim's father, a prominent defense attorney, tries to get the case taken over by Area Central Homicide, Voight digs back into the old case under the watchful eye of his former partner, Lieutenant Denny Woods.