Diane Goodwin was a former FBI agent. She was first mentioned in Guilty, where Caleb found evidence that she was apparently dead prior to the first bombing before telling Elias on the phone about the discrepancy on the allegations made against Alex, who was the former suspect of the Grand Central case. Later during the events of Yes, it was revealed that Liam killed Goodwin, as part of his plan to frame Alex for the Grand Central bombing. She was portrayed by Nicole Leroux.