Danny uncovers shocking information while investigating a case again..
An undercover cop in Danny's squad gets killed, and Frank is determi..
Erin investigates a case involving a police officer accused of killi..
A college professor involved with a questionable scholarship program..
A woman is killed by a dose of lidocaine after a secret plastic surg..
Danny and Baez search for teenager who have been randomly punching u..
A woman threatening to kill herself and the man who murdered her par..
A young girl's abduction reminds Danny of an unsolved case he worked..
Danny and Baez investigate the murder of Tiffany Lamp, a popular dra..
Danny and Baez search for a Marine veteran who may have PTSD; a woma..
Danny tracks the distributor of a new deadly street drug.
Danny's loyalty is tested when he has to investigate a childhood fri..
Danny and Baez meet with resistance while investigating a bombing; F..
Baez's estranged brother becomes a murder suspect in a case she and ..
A mob lawyer gets shot and Frank is almost killed after the two of t..
Accusations of excessive force are made against a cop, leading to sc..
A gang member dies after Jamie chases him away from a young boy, and..
Danny and Baez think a girl has been kidnapped, but her mother denie..
A teen girl dies after she is seemingly pushed in front of a subway ..
Danny serves as lead hostage negotiator when Erin is held at gunpoin..
Frank pushes to have a cop killer brought to justice, but Erin drops..