Season 0 of Marcella premiered on February 9, 2018.

Season 1 of Marcella premiered on April 4, 2016.

Season 2 of Marcella premiered on February 19, 2018.

Season 3 of Marcella premiered on January 26, 2021.

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.