Detective John Smith sat at his desk, staring at the stack of files in front of him. He had been a detective for over 10 years, and had seen it all. But this case was different. A string of murders had taken place in the city, and the killer had yet to be caught.

John leaned back in his chair and closed his eyes, trying to think of any leads or clues that could help him crack the case. Suddenly, his phone rang. It was the coroner's office. They had found something on the latest victim that could potentially be a clue.

John rushed to the morgue, where the coroner handed him a small piece of evidence. It was a button from a coat. John examined it closely, and noticed that it had a small engraving on it. It read "J.S."

John knew that this could be the break in the case he had been waiting for. He immediately ordered a search for any individuals who had a coat with a button like this. After a few hours of searching, they found a man named James Scott who matched the description.

John and his partner, Detective Rodriguez, brought James in for questioning. At first, he denied any involvement in the murders. But after hours of questioning, James finally broke down and confessed to the murders.

John couldn't believe it. He had finally solved the case and brought the killer to justice. He felt a sense of satisfaction and accomplishment wash over him.

As he walked out of the interrogation room, John couldn't help but think about the victims and their families. He knew that nothing could bring them back, but he was glad that he could bring some closure to their loved ones. This case may have been solved, but for John, the memory of it would stay with him forever.