3. Jean Guerin

https://montreal.ctvnews.ca/body-hidden-in-freezer-identified-as-missing-montreal-man-1.649132
http://www.thesudburystar.com/2014/11/12/family-lives-with-corpse-hidden-in-basement-freezer-for-a-year-and-a-half
https://www.unsolvedcanada.ca/index.php?topic=5017.0
https://translate.google.ca/translate?hl=en&sl=fr&u=http://fr.canoe.ca/infos/societe/archives/2012/02/20120228-130608.html&prev=search
https://www.google.ca/search?q=Patricia+Noel+eric+viel&ei=3G8IW6OGGMqcjwSg1J2gCw&start=10&sa=N&biw=1536&bih=734
http://www.lapresse.ca/actualites/justice-et-faits-divers/201105/25/01-4402733-cadavre-dans-un-congelateur-la-victime-est-identifiee.php
https://www.lejournaldejoliette.ca/actualites/faits-divers/186165/dix-ans-de-prison-pour-jean-guerin
http://fr.canoe.ca/infos/societe/archives/2014/11/20141111-170247.html
http://www.journaldemontreal.com/2014/11/11/meurtre-deric-viel-jean-guerin-plaide-coupable
http://exruefrontenac.com/nouvelles-generales/faitsdivers/16545-meurtre-stupefiants&prev=search
https://www.lejournaldejoliette.ca/actualites/faits-divers/175194/cadavre-dans-un-congelateur-guerin-accuse-de-meurtre-premedite&prev=search
http://www.lejournaldejoliette.ca/actualites/faits-divers/186165/dix-ans-de-prison-pour-jean-guerin&prev=search
http://www.journaldemontreal.com/2014/11/11/meurtre-deric-viel-jean-guerin-plaide-coupable&prev=search

2. Madeline Carmichael

https://www.nytimes.com/1999/11/07/nyregion/body-of-child-missing-20-years-is-found-in-mother-s-home.html
https://www.nytimes.com/2000/10/24/nyregion/woman-and-son-convicted-in-79-killing-of-3-year-old.html
https://www.upi.com/Archives/2000/11/02/NYC-mom-gets-15-years-in-childs-murder/3586973141200/
https://abcnews.go.com/US/story?id=95433&page=1
https://www.deseretnews.com/article/728732/Mom-son-charged-in-1979-death-of-3-year-old.html
https://www.nytimes.com/1999/11/08/nyregion/visit-by-son-leads-to-woman-s-arrest.html
https://abcnews.go.com/US/story?id=95415&page=1

1. David Nilsen

http://www.bbc.com/news/uk-44097196
https://www.crimeandinvestigation.co.uk/crime-files/dennis-nilsen/timeline
https://www.pressandjournal.co.uk/fp/news/north-east/1084492/dennis-nilsen-a-timeline-of-his-life/
https://www.scotsman.com/lifestyle/dennis-nilsen-the-making-of-a-serial-killer-1-769305
http://murderpedia.org/male.N/n/nilsen-dennis.htm
https://www.irishtimes.com/news/woman-living-in-dublin-told-her-brother-was-first-victim-of-killer-1.1000983
https://www.telegraph.co.uk/finance/property/11988371/Would-you-buy-the-former-flat-of-one-of-Britains-worst-serial-killers.html
https://books.google.ca/books?id=DwNVbOcTncwC&lpg=PA197&ots=B3wGutTs9G&dq=Kenneth%20Ockendon&pg=PA196#v=onepage&q=Kenneth%20Ockendon&f=false
http://murderpedia.org/male.N/n/nilsen-dennis-victims.htm
https://books.google.ca/books?id=iR8aewDQcDoC&lpg=PA90&dq=Dennis%20Nilsen%20%C2%A31000&pg=PA90#v=onepage&q=Dennis%20Nilsen%20%C2%A31000&f=false
https://books.google.ca/books?id=949zCwAAQBAJ&lpg=PT181&dq=Dennis%20Nilsen%20%C2%A31000&pg=PT181#v=onepage&q=Dennis%20Nilsen%20%C2%A31000&f=false
http://www.bbc.com/news/uk-england-44172573