On the Season finale of What Makes a Killer: On November 17th 2006, police in the German city of Cologne searched the vehicle of a 47-year man suspected of murder. What they found inside the truck was a collection of gruesome memorabilia. That day, police apprehended Volker Eckert, bringing an end to a 32 year career of murder that spanned five European countries. To this day, the exact number of his victims is still unknown.

This episode is sponsored by: 

Original music by Ben Krejci and engel.com/">Kai Engel. Licensed under Creative Commons: By Attribution 4.0 License.