What do you do in your downtime when your day job is Screen Goddess?

A refugee from the Nazis, Hedy Lamarr found notoriety – at age 17 – for appearing nude in a film called Ecstasy, for six marriages, for being the Most Beautiful Woman in the World, for starring in a string of Hollywood movies in the 1940s and 1950s, for setting up her own movie studio, for inspiring Disney’s Snow White and Catwoman.

But for forty years, her claim to enduring fame was a secret; in her downtime, she invented Spread Spectrum radio. Today, this piece of technical brilliance underpins WiFi, cellphones, GPS, and other technologies; it's worth billions. Annually. And it never made her a penny.

LAMARR! traces various highs and lows in Hedy’s life as an engineering genius, industrial spy, and prisoner in her husband’s fairytale castle. But beware. Not all fairytales have happy endings.