Eva-Marie was born in New York City, USA to an American mother and Swiss-German father. She began acting on stage at the age of 15 before being accepted to the Gymnase Auguste-Piccard in Lausanne due to her skills as a pianist. After spending the summers studying at RADA and Syvlia Young, she moved permanently at 18 to attend University College London. There she was scouted by her first modeling agency and also started working professionally as a film actress, securing her first screen role in The Circle as Claire. She later graduated with a degree in Zoology and returned to pursue acting with a newly-won place at the Royal Central School of Speech and Drama under the tutelage of Amanda Brennan. Since graduating from drama school in 2017 she has continued working consistently in film, both in front of and behind the camera. Her love of film prompted her to explore all aspects of her industry, working in between acting jobs as an art director and assistant producer. She also writes spoken word and classically-influenced poetry, with several of her pieces published in recognized journals.

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She has the legal right to work in the UK, EU and USA.