8 episodes

Marcella - Series 3

First aired Jan 26, 2021Season 3

Following on from the dramatic conclusion of the previous series, season 3 sees Marcella in Belfast as an undercover detective. She has taken on a new identity, Keira, and has infiltrated the infamous Maguire crime family but as she investigates their activities, questions come to the fore about how much she’s embraced the Keira personality and left Marcella behind.

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Community reviews for Marcella, shown here with its season details.

Bazzjazz

Apr 12, 2018

7.0

Marcella was a series that I was a little apprehensive to watch for some reason but I must admit that it pleasantly surprised me. It was your run of the mill formula series. It had some very good writing and the characters were very believable, probably cause they weren’t that likable in their roles. It was a nice break from your Hollywood engine of series that come off a conveyer belt. So it had good merit. Although I’d hope they leave the series at two seasons as that could probably kill it.

Dasha K

Nov 14, 2025

1.0

**WARNING: Don't take massive amounts of narcotics and then try to write a TV show 🚨** This dumb show is a great example of writers and production both apparently consuming large amounts of hallucinogens and/or narcotics and then attempting to put together a linear story. I cannot believe Netflix let this be released in it's current state, just baffling decisions by everyone involved. It reminded me of those drug movies from the 1970s where it's clear the people behind the camera were under the completely out of it, and obviously under the influence 🥴 After seeing Season three, I fully understand why the show was canceled! **1/10 Not Recommended!**

Episodes

Episode 1

4.8

Jan 26, 202147 min8 votes

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

4.8

Jan 26, 202146 min8 votes

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

5.6

Feb 2, 202146 min7 votes

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

6.3

Feb 9, 202146 min6 votes

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

5.4

Feb 16, 202146 min7 votes

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

5.4

Feb 23, 202147 min7 votes

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

5.4

Mar 2, 202143 min7 votes

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

4.8

Mar 2, 202145 min8 votes

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.