It's his dad, Bob (Jack Coleman). Bob Ruzek aka Disco Bob was initially introduced in Chicago PD season 2, and has bumped heads with his notably more upright son for the bulk of his time on the show.

Chicago PD retuns with a fascinating case that has Kim trying to solve a case at her nightly diner. We tease what's next!

Yeah, Chicago PD Season 12 Episode 15 cannot be missed. Words cannot describe how much I’ve missed Nina Chapman. After she sauntered out of her life and hopped a plane to Phonix after a shocking ...