Brian Cohee Jr.'s case is one of the more chilling examples of extreme violence. In 2021, Cohee, then 19 years old, brutally murdered and dismembered Warren Barnes, a 69-year-old homeless man, in Idaho. After killing Barnes, Cohee took parts of the dismembered body back to his home, where his mother eventually discovered a severed head and hands in his closet. The discovery led to Cohee's arrest, where he calmly admitted to the crime during a police interrogation. He later pleaded insanity, but a psychological evaluation deemed him competent to stand trial. Cohee was convicted and sentenced to life in prison without the possibility of parole

Shawn Grate, an Ohio serial killer, was arrested in 2016 after a woman he kidnapped called 911 while being held captive. Grate was convicted of murdering five women between 2006 and 2016. His victims were often vulnerable women whom he lured into abandoned houses. Grate’s crimes came to light when his final victim bravely escaped and alerted authorities, leading to his arrest. After his capture, he confessed to multiple murders, showing little remorse. In 2018, he was sentenced to death, with additional life sentences for rape, kidnapping, and other charges. Grate’s chilling confessions and the bravery of the surviving victim captivated public attention, underscoring both the horror of his crimes and the failures in identifying him sooner.