The guy you see on your screen openly challenged the police, saying if you're so expert, then try and find me. Most serial killers stay hidden and do their work in secret. But this guy was the complete opposite. He would send letters to the police himself and brag about his crimes. Just like it is often shown in movies. But this story is absolute reality. This guy considered himself a criminal mastermind. But one small mistake proved that he was no mastermind. He was just an ordinary person hungry for attention. He wanted people to know him. In the 1960s, Dennis Rader worked as a home security technician. He used to go to different houses to install alarms and security systems. From the outside, he seemed like a devoted father and husband. People used to say he was a pillar of the community. Respectable, responsible . The same guy who helps everyone in his neighborhood. But behind this good image, some violent fantasies were hidden inside Rader. Rader had thought of many criminal things in his mind. He was just waiting for a proper time to arrive so he could actually perform them. That time comes when Rader realizes his job as a home security technician gives him direct access to people's homes. Going house to house, he starts choosing his future targets. He preferred those who looked vulnerable and lived alone. Soon, he has an entire list made. His first target was a woman named Julie. One morning, Rader breaks into her house. He thought she would be alone, but her husband and two children were also present there. Rader kills everyone. Before leaving, he cleans everything that could trace him, and he succeeds in this to a great extent. When the police arrive, they don't find any solid clues. A few months later, Rader goes to the next victim on his list, and this time too, the police get nothing. Most people choose to stay silent after getting away with a murder . But for Rader, this silence was unbearable. He wanted the world to know how brilliant he was. So he decides that he will introduce himself to the world. A few months after his crime, Rader sends an anonymous letter to the police. In that letter, he accepts responsibility for these crimes. Even that, he even tells the police what his favorite name is. BTK, which stood for Bind, Torture, Kill. The media immediately picks up this name. The BTK Strangler becomes a national headline. Rader loves this attention. It motivates him to resume his crimes. Over the next several years, he takes the lives of at least 10 people. After every crime, he keeps sending letters, poems, and puzzles to the police. Sometimes he would mention in his letters where the victims could be found and even dared the police, saying if you can catch me, then show me. By 2004, Rader didn't like sending letters anymore. He wanted to go a bit digital. Now he wanted to type letters on a computer and send them to the police via a floppy disk. A floppy disk was an early version of digital storage. Like today's USB sticks, but Rader didn't know if the police could trace a floppy disk or not. So he mailed one last letter to the police and asked, can I send you information on a floppy disk without the computer being traced? He told the police to answer via a newspaper ad, and they did just that. The answer comes in a newspaper ad that , yes, using a floppy disk is perfectly safe. But this answer was a lie. The reality was that a floppy disk could tell exactly which computer it was created on. But Rader's biggest mistake was that he believed the police. Rader mails the disk. When investigators examine this disk, they find two key details. The file was created at an address in Wichita, Kansas, and it was created by someone named Dennis. The police track him down, and Dennis is arrested near his home in February 2005 . His trial becomes a media spectacle. Some parts of it were even broadcast on TV. Millions of people watched as Rader calmly described his crimes. As if he were talking about something normal. He is sentenced to 10 consecutive life terms. Dennis is still serving his sentence today. After this, there is an interesting story where a guy falls in love with his own victim, and his heartbreak took the lives of many innocent people. This story is also so strange that you won't be able to believe it. I have made my next video on this topic, and I would highly recommend that you must watch that video. See you in the next video.