We earn a commission for products purchased through some links in this article. Marcella series 3 confuses viewers with new look It's not just her hair that was different. Marcella spoilers follow. Marcella returned to ITV for its third series on Tuesday evening (January 26) and a LOT was different. Series two ended with Marcella (Anna Friel) faking her own death, so now she's living a new life in Belfast as Keira Devlin – a blonde. Of course, nothing is ever simple in Marcella's life, so rather than just laying low, she's working as an undercover cop and has already infiltrated a notorious crime family while dating a crooked accountant.