The family argues over Danny's questionable tactics as he searches for a missing girl; Jamie starts his new life as a cop.
A good Samaritan with a police record takes action against a terrorizing subway criminal, forcing the Reagans to weigh the rights and wrongs of vigilantism.
When an off-duty police officer is killed during a diamond heist, the entire NYPD searches for the person responsible.
The Reagans argue the advantages and disadvantages of profiling; Danny, Frank and the rest of the NYPD search for a homemade bomb about to detonate.
Danny, Erin and Frank work together to seek justice when the main suspect in a rape case is protected by diplomatic immunity.
