NEED TO KNOW

Charlie Otero and two of his siblings survived Dennis Rader's brutal murder of their parents and two younger siblings in January 1974

Rader, who was given the moniker the BTK Killer, broke into their Wichita home and killed parents Joseph and Julia and children Josie and Joey

Charlie has since spoken about surviving the grief and using his experience to try to help others

Charlie Otero was 15 years old when his family was brutally murdered by Dennis Rader , a.k.a. the BTK Killer .

In January 1974, while Charlie and two of his siblings were at school, his parents, Joseph and Julia Otero, were at their home in Wichita, Kan., with their youngest children, daughter Josie and son Joey. Rader had been stalking the family, and ultimately carried out the cruel murders on Jan.

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