

Sam and Ben were brothers. They liked to play with cars and trucks. One day, they found a big yellow taxi in the street. It was dead. It did not move or make noise.
"Can we play with it?" Sam asked.
"Maybe," Ben said. "But we have to be careful. It is not ours."
They went to the taxi and opened the door. Inside, they saw a lot of papers and pens. They also saw a red mark on the seat. It looked like blood.
"What is this?" Sam wondered.
"I don't know," Ben said. "But it is not good. Maybe someone was hurt."
They decided to play with the papers and pens. They drew pictures and wrote their names. They had fun. They did not see the man who was hiding behind a tree. He was watching them. He had a gun. He was the one who made the red mark on the seat. He was angry. He wanted his papers back. He waited for the right moment to get them.
He saw Sam and Ben get out of the taxi. They were going to their home. He ran to the taxi and grabbed the papers. He looked at them. He saw the drawings and the names. He saw the mark that Sam and Ben made. He was furious. He threw the papers on the ground. He got in the taxi and tried to start it. But it was still dead. He could not escape. He heard sirens. He saw lights. He saw police. He was caught. He was sorry.
Sam and Ben did not know what happened. They only knew that they had fun. They did not know that they helped the police. They did not know that they marked the bad man. They only knew that they liked to play with cars and trucks. They were happy.
