The New York Times and Bafblog list some interesting food frauds and dangerous adulteration investigated by police and Interpol around the world.
Read the articles at: http://barfblog.com/2016/05/food-fraud-police-and-interpol-crackdown-on-toxic-food/
and: http://www.nytimes.com/2016/05/26/world/what-in-the-world/interpol-toxic-food.html?_r=1