chunk: Erin is given files for a real-estate case where the Pacific Gas and Electric Company (PG&E) is offering to purchase the home of Donna Jensen, a resident of Hinkley, California. Erin is surprised to see medical records in the file and visits Donna, who explains that she had simply kept all her PG&E correspondence together. Donna appreciates PG&E's help: she has had several tumors and her husband has Hodgkin's lymphoma, but PG&E has always supplied a doctor at their own expense. Erin asks why they would do that, and Donna replies, "because of the chromium". Erin begins digging into the case and finds evidence that the groundwater in Hinkley is seriously contaminated with carcinogenic hexavalent chromium, but PG&E has been telling Hinkley residents that they use a safer form of chromium. After several days away from the office doing this research, she is fired by Ed until he realizes that she was working all the time, and sees what she has found out.