Watch Chicago PD Season 2 Episode 4 online to discover what happens when a man loses sight of his family to try to accomplish something else. The biggest shocker of the evening is when Antonio's daughter shows up at the precinct. Is she OK? What drove her to take a train by herself into the city? And why is a young girl named Olive showing up at the precinct looking for Voigh? The answer might surprise you. Watch Chicago PD online now.