Episode 1
Eighteen months later, Marcella has a new life as a deep undercover operative in Belfast, spying on a powerful family that's running a shady business.
Episode 2
Marcella is recognized on the street, and later finds an odd note on her windshield. When DCI Sangha arrives in Belfast, Bobby must cover his tracks.
Episode 3
Marcella receives an anonymous package. At Jessie's vigil, DCI Sangha spots an eerily familiar face. Finn finds out who sold Jessie the heroin.
Episode 4
The Maguires arrange for Bobby to leave the U.K., but the plan goes awry en route to the airport. Katherine sends a threatening message to Marcella.
Episode 5
Her stalker's latest threat leaves Marcella suspicious of Frank. After recognizing one of Bobby's abductors in police records, she tracks him down.
Episode 6
Marcella recalls how Frank rescued and reprogrammed her 18 months earlier. When Stacey flees from the Maguires with her baby, Marcella must find her.
Episode 7
Finn uses Rory's phobia to bully him into an alliance. Marcella confronts Frank with a discovery about his past. DCI Sangha learns of Stacey's arrest.
Episode 8
Marcella's latest blackout leaves her with an unexplained corpse. Wondering why DCI Sangha is still in Belfast, Jack decides to investigate on his own.
