Danny said, “You are the Owen from the card?” I nodded, confused. “Grandpa talks about you every Sunday,” he said, already kneeling and checking Mr. Hargrove’s pupils. “The man in the yellow house who carries in everybody’s trash cans.” Then he called for an ambulance himself, calmly, and gave the dispatcher a stroke assessment in six clear sentences. Mr. Hargrove flinched at the word ambulance, and Danny squeezed his shoulder and promised he would ride along the entire way.

In the hallway, Danny told me the rest. His grandmother Marian had died in a hospital two years earlier, while strangers pushed his grandfather out of the room for a procedure, and he had missed her last breath by one minute. Since then, sirens and strangers terrified him. The porch light was her old lantern code from his sailor days: three flashes meant I love you, and four meant I need you. He had signaled to her every night, and tonight someone finally answered.

He added the line about me to the card in the spring, after I carried his trash can up the drive in a rainstorm without being asked. Danny said it was the first time his grandfather had trusted a stranger since the funeral. At the hospital, the doctors confirmed a small stroke, caught within the first hour. Because Danny had been called first, he was beside his grandfather before the ambulance doors closed, holding his hand the entire ride, which was all his grandfather had ever asked for.

Mr. Hargrove recovered slowly, and I looked after Biscuit and visited him every day in rehabilitation. He came home in December, walking with a cane and a very straight back. That first night at 9:15, I stood at my kitchen window, and across the road the porch light blinked three times. This time, I flipped my own porch light off and on three times in answer. Danny says his grandfather smiled like a boy, and now the two houses answer each other every night.