Jeffrey Willis - A monster in disguise, was convicted of murdering Jessica Heeringa and Rebekah Bletsch. He attempted to Kidnap Madison Nygard which was what ultimately led to his much needed undoing. 

References:

20/20 season 46 episode 15 - the Murderer in the Minivan

https://www.mlive.com/galleries/KVECPLH7ZFFIDPU2RDYUDBPUHY/

https://mdocweb.state.mi.us/otis2/otis2profile.aspx?mdocNumber=116568

https://www.mlive.com/news/muskegon/2016/12/eight_new_facts_about_jeffrey.html

https://www.freep.com/story/news/local/michigan/2017/10/21/jeffrey-willis-rebekah-bletsch/787838001/#

https://www.freep.com/story/news/local/michigan/2017/10/21/jeffrey-willis-rebekah-bletsch/787838001/#

https://www.mlive.com/galleries/2S2QOKUSUJHBDPCIOUT3HY6J3U/

https://tribwxmi.wordpress.com/2018/05/11/computer-forensics-expert-tells-of-murder-rape-videos-found-on-willis-computer/

https://www.woodtv.com/news/target-8/unmasked-the-two-faces-of-jeffrey-willis/

https://www.fox17online.com/news/local-news/heeringa-missing-10-years-interrogation-tapes-reveal-connections-between-jeffrey-willis-and-his-victims

https://www.wzzm13.com/article/news/local/muskegon/muskegon-killer-jeffrey-willis-trying-convictions-overturned-prosecutor-confirms/69-b6868219-1b5a-4b99-83c0-e38fa9a9e1ea

https://www.manisteenews.com/news/article/who-is-killer-jeffrey-willis-where-is-he-michigan-18653949.php

https://en.wikipedia.org/wiki/Murder_of_Jessica_Heeringa

Music credit:

Please see the below for music credit and license:

https://www.thedarkpiano.com/creepy-piano-music

https://soundcloud.com/myuu