These cold cases got red hot in the hands of armchair detectives. For this list, well be looking at the most puzzling criminal cases that were pieced together either in part or completely as a result of exceptional investigative work by regular citizens. Our countdown includes Victims Friend Cracks a Cold Case, Margaret Davis Solves Her Sons Murder, Yaakov German Tracks Down a Kidnapper & Killer, Celia Blay Catches an Internet Predator, and more! Have you ever solved a crime? Let us know in the comments.

Watch more great crime videos here:
Top 10 Books That Inspired Horrific Real Life Crimes: https://youtu.be/U-IIBOiRapk
Top 10 Partners in Crime: https://youtu.be/Bi1LRbmwxc4
Top 20 Crime Movies of the Century (So Far): https://youtu.be/G3BDNgNnq-g

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