Carolyn Maddox, the Defense Attorney, played by CCH Pounder, ironically helped defend Stabler's daughter in the episode Swing (2008) (10.3).
Charlie Barnett plays a suspect with the last name Mills. He plays a character named Mills on Chicago Fire. These two shows have additionally had crossover episodes.
Charlie Barnett (who here guest stars as Chuck Mills) has also starred in another Dick Wolf show, Chicago Fire. His character, Peter, shared the same surname of the character in this very episode, Mills.