Hedy marries Friedrich (Fritz) Mandl, a wealthy Austrian arms dealer who is significantly older than her. He is reportedly controlling and possessive.

Mandl attempts to control Hedy's life and career, effectively keeping her confined within their opulent home. He reportedly tries to buy up all existing prints of 'Ecstasy'.

Through her association with Mandl and his business dealings, Hedy is exposed to advanced military technology, including weapons systems and communications technologies. These experiences will later inform her inventive endeavors.

Hedy becomes increasingly unhappy in her marriage. She reportedly drugs her maid and escapes to Paris, eventually making her way to London.