As the team works to solve a deadly shooting in Burnside, Atwater realizes he has a very personal connection to the case.

The unit scrambles to search for one of their own who is in grave danger.

A shocking murder pulls rookie officer Dante Torres into his own neighborhood. As Voight and Atwater help him navigate the case and manage tricky personal dynamics with wary neighbors, Torres realizes his life may be forever changed.

Upton becomes consumed with a decades-old missing persons case linked to Petrovic after a young child shows up to the district seeking help.

Intelligence makes a gruesome discovery that leads Torres to go undercover at the juvenile detention center where he served time as a teen.