Onahoua Rodriguez

Lilly examines a 1979 murder investigation after a woman hands her a home video filmed by her perverted husband, which appears to show a teenage runaway being shot and killed.

In the season finale, Castle struggles to keep Beckett safe as she hunts down the man who shot her.

Nancy stumbles across a secret as she follows a hidden tunnel. Doug falls in love. Isabel is stuck living with Celia as Dean leaves to accept a new job.

Nancy finds out that the tunnel is being used for more than drugs.

The owner of a diner, Gene Stratis, has been stabbed to death and Sipowicz and Clark interview the victim's son. The son gives them his father's background, a real immigrant's success story.

Nancy decides to inform Agent Till about Esteban's human-trafficking operation that is taking place in the tunnel. This, however, backfires and disaster unfolds.