The butcher baker:

Robert Hansen, dubbed by the media as “The butcher baker” was an American born serial killer active been the periods of ’71 – ’83. 

Appearing to be an ordinary man, a bakery owner with a wife and children, nobody would ever suspect how grisly the nature of his secret life would be.

 He had turned to hunting in his youth as a form of escape from a domineering father and childhood bullying, but no one would imagine that he would start hunting humans as game instead.

 He kidnapped women, bundled them onto his two-seat monoplane and flew them out to the Alaskan wilderness, where he would hunt them down using a .223-caliber Ruger Mini-14 rifle 

Hansen confessed to the murder of 17 women when he was convicted in 1984. However it is suspected to have been many more over the 12 years he was active. 

He was arrested following the escape of one of his victims, a then 17 year old girl by the name of Cindy Paulson. She got into Hansen’s car after being offered $200 to perform oral sex, but instead found herself with a gun to her head. She was taken to a house of his, chained by the neck, raped, tortured and abused for hours until her kidnapper drove them both to the airport in an attempt to load her onto his monoplane.

 Paulson decided to make an escape and managed to flag down a truck driver before Hansen got to her. Robert Hansen was sentenced to life imprisonment, plus 461 years. He died in prison August 21st 2014.

sources: http://www.nydailynews.com/news/crime/serial-killer-sick-revenge-alaskan-frontier-article-1.1922167 https://en.wikipedia.org/wiki/Robert_Hansen
http://criminalminds.wikia.com/wiki/Robert_Hansen