Chicago Justice Season 1 Episode 10 involves a stolen gun and the murder of a child.

When Ernest Williams attempts to turn in the gun he finds under his nephew's mattress during a buyback program, the gun is found to have been recently used in a murder and he is arrested. Williams says that he found the gun under his nephew's mattress. His nephew claims not to know anything about it.

In a seemingly unrelated case, Stone and Valdez are prosecuting Christopher Stackhouse, a gang member who is believed to have murdered a ten-year-old girl during a gang war. But their case is thrown off when the gun WIlliams turned in turns out to be the murder weapon.

The investigation leads to Andre WIlliams' cousin Keo, who has no problem giving the cops attitude and doesn't want to cooperate with the investigation. As the police close in, Keo threatens Andre, leading his uncle to refuse the SA's office's protection and to run away with him.

Meanwhile, Stone decides to try to combat gang violence by forcing the cell phone companies to shut off suspected gang members' cell phones, since they are using social media to plan hits on their enemies.

To find out what happens, watch Chicago Justice Season 1 Episode 10 online.