I-Team: Drug Lab Scandal

CHICAGO (WLS) -- There has been a stunning revelation involving marijuana and DUI cases.

After investigating for months, the ABC7 I-Team exposes a statewide scandal at a forensic testing lab.

The I-Team has uncovered hundreds of potentially wrongful convictions, testing troubles, and claims of a cover-up.

Chuck Goudie and the I-Team investigate, Thursday at 10 p.m.