IMPACT x Nightline: What Happened to Karen Silkwood? The Lost Tapes

Tom Selleck, Donnie Walberg, Bridget Moynahan, Will Estes, and Len Cariou star in "Blue Bloods."

A Good Samaritan with a police record takes action against a terrorizing subway criminal.

When a rape case's primary suspect is protected by diplomatic immunity, Erin, Frank and Danny work within the system to find justice.

When an off-duty police officer is killed, Frank and the entire NYPD are determined to catch the killer.

Danny works the case while Frank oversees a citywide search for a homemade bomb that is ready to detonate in Manhattan.

When three teenagers die from a drug overdose, Danny works to discover the source of the deadly narcotic before it becomes an epidemic.

The Reagans debate Erin’s methods when she tries to take down a gang leader using his law-abiding and do-good younger brother as bait.

When a suspect is killed while Jamie is in pursuit of him, Danny must solve the case in order to clear his brother's name.

The life of a Reagan is put in danger when three dangerous criminals are released from prison because of compromised DNA evidence.

Danny delves into his old life in the New York City nightclub scene after a doorman at one of the hottest clubs is shot.

Danny and Jackie investigate the murder of a high-end escort, and Frank vows to bring a killer to justice in a 25-year-old cold case.

The son of a Russian gangster is killed at his engagement party and Danny delves into the world of the Russian mob.

An undercover counter-terrorism agent is shot and Danny is assigned to the case as the only officer who Frank can trust with classified information.

A young girl is kidnapped and held for ransom, making her drug addicted boyfriend #1 on Danny and Jackie’s suspect list.

Danny hunts for the shooter after an assassination attempt is made on Frank's life.

Nicky goes for her first ride-along when an unidentified young girl is found murdered at a debutante ball.

Danny becomes emotionally involved while looking for a former U.S. marine's killer.

When Danny is the eyewitness to a murder, a member of his family is put in jeopardy in an attempt to keep him from testifying.

After Linda’s niece is poisoned at her first runway show, Danny and Jackie step into the cut-throat world of fashion to find the culprit.

A media blitz occurs when a tourist is murdered outside of a hip lower east side restaurant.

Family friends of the Reagans are murdered and their son is the prime suspect.

The Reagans attempt to take down and expose the Blue Templar.