As a young child, Bruce Wayne watched his parents murdered before his eyes. Thomas and Martha Wayne were walking home from the Monarch Theater one night with their son, when they were held up at gunpoint by a mugger who demanded the pearl necklace that Martha was wearing. When Dr. Wayne refused to surrender it, both he and Martha were shot dead in the streets. Bruce Wayne swore an oath to rid the city of the evil that had taken his parents' lives. He spent his youth traveling the world, training himself to intellectual and physical perfection and learning a variety of crime-fighting skills, including chemistry, criminology, forensics, martial arts, gymnastics, disguise, and escape artistry.