Launching an investigation of his own when his instincts tell him that more is behind a political shooting on Chicago's west side, SOS Detective Billy Harney uncovers a spate of murders connected to his troubled past.

When a witness's son is kidnapped, Chicago's gangland erupts into chaos Once a college football star, Bill Hanrahan has had a hard time of it ever since his bad knees kept him out of the pros. He became a homicide detective with the unfortunate reputation of losing witnesses and loving the bottle. Now Hanrahan is off the sauce, and working a job that should be straightforward: He's guarding a mob informant's ex-wife and teenage son while they tour...

Detective Boone Drake has successfully conducted an operation to bring down street gangs and crime bosses. A leak somewhere in the Chicago PD, however, threatens the life of his key witness, and Drake must figure out who the betrayer is before it's too late.

A devoted Chicago cop from a family of career detectives miraculously survives an attack that kills his partner but that he cannot remember himself, an event that causes him to be charged with double murder and tasked with uncovering what really happened to clear his name.