M Squad
Lt. Frank Ballinger is a no-nonsense plain clothes cop in the elite M Squad Division. The Squad's task is to root out organised crime and corruption in America's Second City, Chicago.

Harry Conklin is killed while on the way to a secret Senate hearing into stand over tactics in the trucking industry. Suspicion falls heavily on a rival Martin Bodie. It is up to Ballinger to fight through the silence and uncover the truth.