I

The radiator in Frank's apartment clanked like an old man clearing his throat. It was February 2003, Chicago, and the wind coming off Lake Michigan cut through walls that had never been meant to hold back winter.

Frank Kowalski sat on his couch, watching television. The screen flickered blue across the room. He was fifty-eight, Polish, unemployed since the steel mill closed, and accustomed to silence. His dog, Boss, lay in a corner by the door. Boss was eight, mixed breed, legs bad from old age. Frank had gotten him from a shelter. The shelter had said the dog was "unadoptable." Frank had said, "Neither am I, apparently."

Boss started whining at the door.

Frank looked up from the television. Boss was pressing his nose against the crack beneath the door, whining softly, like someone who wanted to be let in but was afraid of being let out.

The door was unlocked. Frank had forgotten to lock it. He always forgot to lock it.

Someone was standing in the corridor. A woman, crouched against the wall, shivering. She could not have been more than twenty-four. Her clothes were torn. Her face was bruised. She looked up at Frank with eyes that had nothing left in them. Not fear. Not hope. Just nothing.

She spoke Spanish. Frank did not understand Spanish. But he understood shivering. He understood bruises. He understood the look of someone who had run and had nowhere to go.

He opened the door. She did not move. He stepped aside. She crawled inside.

II

He gave her a blanket. He gave her soup from the can. He sat across from her and watched her eat. She ate quickly, like someone who had not eaten in days. When she finished, she looked at him and said, "Gracias."

He nodded.

She would not sleep on the couch. She slept on the floor, wrapped in the blanket, Boss lying beside her. In the morning, she was gone. The blanket was on the floor. The soup can was empty. The door was closed.

She came back that night. And the night after. And the night after that.

Frank did not ask questions. He gave her food. He gave her the blanket. He turned on the television and she sat on the floor and watched it with him. Sometimes she pointed at the window and looked north. Sometimes she drew letters on the table with her finger. C. M.

One night, Frank found a scarf on the couch. It was Mexican, traditional, embroidered with two letters in red thread. C.M. He picked it up. It was warm from her body. He rolled it up and tied it around Boss's neck.

Boss sniffed the scarf. Sniffed Frank. Looked at the door.

Frank looked at the dog. "You want to go out?"

Boss looked at the door.

Frank opened the door. Boss stood in the doorway, the scarf around his neck, looking back at Frank.

"Go on, then," Frank said.

Boss walked out into the corridor. He did not run. He walked slowly, deliberately, down the stairs, onto the street, into the Chicago wind.

Frank closed the door. He went back to the couch. He opened a beer. He watched television.

He did not follow the dog.

III

Boss was old. His legs were bad. The Chicago wind was cold. He walked for two days, following the scent of the scarf—Maria's scent, mixed with something else, something that pointed north through streets he did not know, past buildings he did not recognize, across bridges he had never crossed.

On the second day, he found a gas station. A young man was pumping gas into a car. The man was twenty-six, Latino, with tired eyes and strong hands. Boss walked up to him, dropped the scarf at his feet, and sat down.

The man picked up the scarf. Looked at the embroidery. His face changed. He knelt down, touched Boss's head, and said, "Maria?"

Boss wagged his tail once.

The man's name was Carlos. He worked at the gas station. He had a girlfriend named Maria who had disappeared two weeks ago. She had gone to visit her sister in the city and had not come back. The police had said, "Missing persons take time." Carlos had said, "She's not missing. She's been taken."

Carlos called Frank. Frank did not answer. Carlos drove to Frank's apartment. The apartment was empty. Frank was gone.

Frank had taken Boss to an animal shelter on the South Side. "He's too old for this city," Frank had told the shelter worker. "He needs space."

Carlos went to the shelter. Found Boss. Asked where Maria was. The shelter worker did not know. Carlos tied the scarf around Boss's neck again. Boss looked at him and whined.

Carlos drove back to the address Maria had given him—the address of the apartment where she had been held. He parked across the street. Watched. Men came and went. Cars with tinted windows. A man in a suit who looked like a taxi dispatcher but walked like someone who carried a gun.

Carlos knew what he had to do. He also knew he was out of his depth.

He went inside the apartment building. Knocked on the door. A man answered. Derek Shaw. Twenty-fifties, clean-shaven, polite smile, dead eyes.

"Can I help you?" Shaw said.

"Where is Maria?" Carlos said.

Shaw's smile did not change. "I don't know who that is."

"Don't." Carlos's voice was quiet. "Don't do this."

Shaw's smile disappeared. He opened the door wider. "Come in, friend. Let's talk."

Carlos stepped inside. The door closed behind him. He heard men moving in the hallway. He heard a door open. He heard Shaw say, "He knows too much."

He did not hear the hit.

IV

Frank came back from the shelter at midnight. Found Carlos sitting on the steps outside his building, smoking a cigarette, crying silently.

Frank sat down beside him. Gave him a cigarette. They smoked in silence.

"Dead," Carlos said.

Frank nodded.

"Maria too."

Frank nodded again.

"They took her from the basement," Carlos said. "Locked her in. Shaw's men. I went to save her and they—she's in a basement somewhere and she's alone and she's afraid and I couldn't—"

Frank did not answer. He finished his cigarette. Stood up. Walked inside. Closed the door.

Boss died three months later. Frank buried him behind the building, in a patch of dirt where nothing grew. He did not put a stone. He did not put a name. He just covered the hole with dirt and walked away.

Carlos still works at the gas station. He pumps gas. He fixes cars. He goes home to an empty apartment. He does not cry anymore. He does not smoke on the steps.

Frank sits on his couch. Watches television. Opens a beer. Looks out the window at the corridor where Maria first appeared.

Nothing changes.

Nobody saves anybody.