
This episode discusses the violent history of Edward Johnson, a notorious inmate in the Minnesota Correctional Facility Stillwater, and his brutal murder of correctional officer Joseph Gum.
Edward Johnson, described as a cold and calculating killer, brutally murdered his friend Brooke Thompson in 2002. He had a history of violence and showed no remorse for his actions, which included multiple assaults while incarcerated.
After serving time for Thompson's murder, Johnson continued his violent behavior in prison, eventually leading to the murder of correctional officer Joseph Gum in 2018. Johnson attacked Gum with a hammer, marking the first time a correctional officer was killed by an inmate in Minnesota.
The episode highlights the systemic issues within the prison system that allowed Johnson access to tools that could be used as weapons, raising questions about the safety of correctional officers and inmates alike.
Johnson was sentenced to life in prison without parole and transferred to a supermax facility, emphasizing the ongoing threat he poses to society.
Edward Johnson, a violent inmate, murdered correctional officer Joseph Gum after previously killing his friend Brooke Thompson.

This episode stands out for the following:
He’s the devil.The Hammer Killer: Edward Johnson | World’s Most Evil Prisoners
This was normal.The Hammer Killer: Edward Johnson | World’s Most Evil Prisoners
She kept screaming, please stop!The Hammer Killer: Edward Johnson | World’s Most Evil Prisoners
He thought it was funny.The Hammer Killer: Edward Johnson | World’s Most Evil Prisoners
It's going to take one of us to die before there's any significant change.The Hammer Killer: Edward Johnson | World’s Most Evil Prisoners
He was a vibrant, beautiful person with a kind heart.The Hammer Killer: Edward Johnson | World’s Most Evil Prisoners