Why washed the Children's clothes? Because the killers wanted to remove their traces, simply. Any guilt or remorse. Why Boys and Girls? Because the torture-murder element was eqaully important as sexual element for them, 'cos this is a gang-related. Why sodomized the Boys? Because these killers were gays, gay paedophiles. Some opinions: "Could be a veteran, wanted to take revenge on middle-class families 'cos of Vietnam"...No! That type of persons are usually mass murderers...in shop malls, supermarkets, restaurants, high schools, go there, kill there many people in one time...not innocent kids! Don't forget the sexual element!
This was a gang, Christopher Busch was untouchable 'cos of his father, a General Motors executive...mates killed him, maybe the Cass Corridor paedophile was also the part of the gang. I agree with Erica McAvoy, there was a younger boy, similar age, 14-15 years old teenager who lured them, DNA proved. The Kids shouldn't have gone anywhere with an older man. And important..."12-years-old Jill Robinson seem to hurry leave the house, but why?" No, Matt, no! Jill was a teenage runaway, not first time, after many debates with her mother and met with these monsters. No surveillance on Tim, his parents had dinner with his dad's business partner. Sister, Kathy had date. The older brothers had another activities...He was alone, like Mark Stebbins, during his brother, Mike played pool in American Legion Hall. They lured both of them...All of them. I think this gang made movies with (these) kids for (gay) paedophiles... :( :( :( :(
Babysitter Killer / Oakland County Child Killer (1976-1977):
https://en.wikipedia.org/wiki/Oakland_County_Child_Killer
https://criminalminds.fandom.com/wiki/The_Babysitter_Killer
https://listverse.com/2018/08/28/10-horrific-facts-about-the-oakland-county-child-killer/
https://skdb.fandom.com/wiki/Oakland_County_Child_Killer
https://catherinebroad.blog/2020/01/10/thank-you-to-a-reader/
https://catherinebroad.blog/2020/09/05/the-previously-unreleased-composites-the-latest-betrayal/comment-page-1/
The "secret" is out and I had right..."13" (Season 1) is Joel Rifkin, 'The New York Serial Killer' and "Raven" (Season 2 and 3) is Keith Hunter Jesperson, 'The Happy Face Killer'.
I recognized their voices in the phone...Yesss!!! As a serial killer "specialist", it wasn't too hard.
(And my other options were Dennis Rader, "The BTK Killer" and Gary "Green River" Ridgway for a ver-very short period...but they weren't fit with the detalis.)