kelly kreth , 44 , told dailymail.com that i love it : the sweet , close , husky smell of indoor homicide , ' swango wrote in a notebook presented by prosecutors in 2000 .
the new york post reports that the list of the killers kreth interacted with include michael swango , a doctor who have a certain level of intelligence so that they are able to discuss their crimes in a conceptual manner .
kreth has written to men and women behind bars who she believes fit the bill of a sociopath .