here. can the violence be stopped? larson travels to the frontlines of a car few people know about. twisted justice? i reached for the gun. i was convicted of second-degree murder. he would walk free after the convict was overturned. how did he end up back in prison. you must have been crushed when they told you you had to go back. . revealing investigations and fascinating characters. stories with impact. this is cnn presents. with your host tonight, brooke baldwin and sanjay gupta. the bloody drug wa are in mexico. it s a region that is more violent. the commander has called the northern triangle of guatemala and honduras the deadliest place in the world. the homicide rate has more than doubled in five years. cnn goes to the heart of the violence. the past year over 17,000 people have been murdered in guatemala, el salvador and honduras. in honduras, over 90% of crimes like murder are never solved. they call it the impunity. i asked the chief of police