Burden of Truth - Season 1 Episode 3

Relying on her esteemed reputation as a partner at CTS, Joanna convinces a hydrologist to come to Millwood to test the soil. With reluctant permission from the local Mayor, Joanna and Billy narrow down their list of suspects to a handful of industrial sites in the community. After testing the soil and groundwater around town, they make the startling discovery that the field is the source of the toxin when they uncover barrels of sludge buried there. But someone would rather they stop digging and the pair get run off the road.