Mass.: Falsified Drug Tests, Thousands of Convictions

Sonja Farak (above) was a standout forensic chemist for the Massachusetts State Police for nine years, helping send away between 8,000 and 10,000 defendants.  During that time she was also an addict who used the drugs she was analyzing – often smoking crack in the crime lab's restroom and cooking up her own batches of the drug in the lab. Five years after Farak's arrest in 2013, very few of the people she helped to imprison have been told of her misconduct.