No matter how hard Rachid tries to recreate himself, to become educated and worldly—to “learn English”—it is impossible for this hip Beiruti with his cell phone and high-speed internet to sever the connection to his past in the Lebanese village of Zgharta, known for its “tough guys” and old-fashioned clan mentality. When the news of his father’s murder, a case of blood revenge, reaches him by chance through a newspaper report, it...