Season 3
8 episodes · first aired 2021-01-26
| Still | # | Title | Overview | Air date | Rating |
|---|---|---|---|---|---|
 | 01 | Episode 1 2021-01-26 | 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. | 2021-01-26 | 4.8 |
 | 02 | Episode 2 2021-01-26 | 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. | 2021-01-26 | 4.8 |
 | 03 | Episode 3 2021-02-02 | Marcella receives an anonymous package. At Jessie's vigil, DCI Sangha spots an eerily familiar face. Finn finds out who sold Jessie the heroin. | 2021-02-02 | 5.6 |
 | 04 | Episode 4 2021-02-09 | 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. | 2021-02-09 | 6.3 |
 | 05 | Episode 5 2021-02-16 | Her stalker's latest threat leaves Marcella suspicious of Frank. After recognizing one of Bobby's abductors in police records, she tracks him down. | 2021-02-16 | 5.4 |
 | 06 | Episode 6 2021-02-23 | Marcella recalls how Frank rescued and reprogrammed her 18 months earlier. When Stacey flees from the Maguires with her baby, Marcella must find her. | 2021-02-23 | 5.4 |
 | 07 | Episode 7 2021-03-02 | 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. | 2021-03-02 | 5.4 |
 | 08 | Episode 8 2021-03-02 | 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. | 2021-03-02 | 4.8 |
Ratings shown are community scores. Once OMDB is wired, these become per-episode IMDB values.