Marietta is a Swedish screenwriter for TV and film and an international script consultant whose work over the last 12 years includes Sundance Labs, Torino Film Lab, Binger Amsterdam, Biennale College Venice, Feature Expanded, and many more. She studied at Tisch School of Arts and is a voting member of the European Film Academy. She worked with the development and writing of TV series in Scandinavia for companies such as SVT Drama, Pearson-Fremantle and SAM.