Dr. Maddy Rierdon, an investigator for the Department of Agriculture, is the only person who can protect America from a deadly breed of bioengineered locusts.Dr. Maddy Rierdon, an investigator for the Department of Agriculture, is the only person who can protect America from a deadly breed of bioengineered locusts.Dr. Maddy Rierdon, an investigator for the Department of Agriculture, is the only person who can protect America from a deadly breed of bioengineered locusts.