Hedy Lamarr lived a remarkable life as an actress of Hollywood’s Golden Age after leaving Europe shortly before the start of World War II. Fleeing a restrictive marriage in Austria in 1937, Lamarr arrived in Hollywood and skyrocketed to fame, starring in films like Algiers (1938), Ziegfeld Girl (1941), and Samson and Delilah (1949). However, only late in her life was she recognized for a lesser-known aspect of her work: inventing. During World War II, she invented a “Secret Communication System,” together with avant-garde composer George Antheil. The system used the concept of frequency hopping to guide torpedoes in a...