Marcella Main cast, played by Harriet Cains Episode 2x01: Episode 1 (Feb 19, 2018) Episode 2x02: Episode 2 (Feb 26, 2018) Episode 2x03: Episode 3 (Mar 5, 2018) Episode 2x04: Episode 4 (Mar 12, 2018) Episode 2x05: Episode 5 (Mar 19, 2018) Episode 2x06: Episode 6 (Mar 26, 2018)