Frantic, Carlitos found a map. He found her street. It was only a few miles away. He left Marta and her group and ran into the sprawling, anonymous city. He ran until he found the street. He found the address—a rundown apartment building with a laundry room below. He pounded on the door. A grumpy woman opened it. No, Rosario didn't live there anymore. She moved last month. But her friend, a woman named Alicia, still worked in the laundry.

In Los Angeles, Rosario had finally saved enough for a coyote to take her south. She stood in a crowded, sweltering garage, waiting to be smuggled back into Mexico, back to her son. The irony was a knife twisting in her heart. She was going south. He was coming north. They were two ships passing in the cruelest of nights.

She burst into the laundromat. It was quiet, smelling of soap and warm fabric. In the back, sitting on a broken chair, was a small boy with messy hair and tired eyes. He looked up.

The sun beat down on the dusty border town of Tijuana like a hammer. Inside a cramped, cheerful kitchen, nine-year-old Carlitos Reyes pressed his palm against the cold glass of a window, watching the world shrink. On the other side of that window, his mother, Rosario, pressed her own hand against the glass, her tears carving silent rivers through her makeup.

She ran from the garage, leaving her coyote, her savings, her plan—everything—behind. She ran for seven miles through the neon-lit streets of Los Angeles, her worn-out shoes slapping the pavement, her lungs screaming, her heart pounding one single name: Carlitos.

Then, a miracle.