 Borden launches a solo magic career and hires Fallon , a silent , mysterious man as his ingénieur . Borden courts and eventually marries a woman named Sarah ( Rebecca Hall ) , who becomes pregnant . At his first show , Borden 's bullet catch trick is sabotaged by Angier , destroying two of Borden 's fingers . Angier launches his own magic career , hiring Olivia Wenscombe ( Scarlett Johansson ) as his assistant and Cutter as his ingénieur . During the finale of Angier 's show , a disguised Borden sabotages Angier 's bird cage act , which maims an audience member and ruins Angier 's reputation . 
