While completing the autopsy of a construction worker who fell to his death Quincy spots some unusual abnormalities. He gets Sam to run some further tests to see if there was anything that could have made the man fall. The results show that he was killed by a large amount of pesticides, pesticides that were covering the tomatoes he had for lunch. Follow up investigations show that a dumpsite near the town of Rosewood is leaking. The chemicals are infecting the ground in and around the dumpsite and town.

A nurse seeks help from Quincy when a heart-attack victim dies at the medical center where she works. Her boss and the two doctors involved want her help in trying to cover up the true circumstances of what happened. She fears for her job if she doesn't help and her career if she does.