Emily and Cal travel to Moldova to track down the Fentanyl Killer - a task that proves to be more dangerous than anticipated. Meanwhile, Nick is given an order that challenges his moral code.

The episode was rated 7.49 from 386 votes.

Jack helps save Emily’s life and finds a startling connection with Emily’s childhood. Emily discovers secrets from the past that relate to a childhood friend, Charles. Meanwhile, Tommy arrests Jack for helping Emily. Alice confronts Nick, which puts both her and Flynn in danger.

The episode was rated 7.48 from 634 votes.

Emily complies with Dawkins requests in order to be taken to Nick, and orchestrates a clever ruse along the way. Meanwhile, as Nick’s guilt and paranoia threaten to overwhelm him, he finally puts a rest to the personal demons that have haunted him.

The episode was rated 7.48 from 221 votes.

When the testifying witness against Emily is murdered, all signs suggest that the murder was committed by Emily. While Tommy Gibbs and the Boston Police Chief are accusing Emily, she and Nick look for an FBI agent who forced the witness to lie. For Emily, there is suspicion that this agent is the one responsible for her abduction.

The episode was rated 7.46 from 749 votes.

Emily and Cal's investigation into the Fentanyl Killer points them toward some dangerous and highly skilled suspects. Elsewhere, Nick's manhunt for the Federal Annex attacker heats up.

The episode was rated 7.46 from 426 votes.

After years of assuming FBI Agent Emily Byrne was a possible victim of serial killer Conrad Harlow, she is miraculously returned to her family. Emily, however, has to struggle with the mysteries of her captivity and the fact that everyone has moved on without her. Investigating Emily’s disappearance, her husband Nick Durand detects a connection between Emily and a sex trafficker Robert Semerov, who has negative feelings about Emily. When the FBI traces the sex trafficker, suspicion suddenly moves to Emily. Is she still the same person they knew?

The episode was rated 7.44 from 997 votes.

Emily’s alleged serial killer, Conrad Harlow, is being released from jail, and Emily has not come close to solving the mystery of her kidnapping and time in captivity. As Emily struggles to return to normal life, a witness turns up and reinforces the suspicions of Emily. Emily denies the suspicions and is sure the witness is lying and was forced into making a false statement, maybe by someone in the FBI. Will Emily and Nick be able to find out the truth before Emily is again torn from her family?

The episode was rated 7.42 from 831 votes.

Emily Byrne struggles to make sense of her time in captivity and her tumultuous past. Meanwhile, a deadly terrorist attack rocks the heart of Boston.

The episode was rated 7.37 from 510 votes.

Stunned by new revelations from her past, Emily intensifies her search for the truth. Tensions mount at the FBI as Nick and Julianne race to profile the Federal Annex terrorist.

The episode was rated 7.35 from 459 votes.

Reeling from a shocking loss, Emily returns to the FBI to get answers. Meanwhile, Nick and Julianne fear the terrorist may be ramping up for his next attack.

The episode was rated 7.32 from 431 votes.