As Olivia drives down Cambridge St., she cannot help herself as the questions well up within her. She looks over at her passenger. "Dr. Bishop, Nina Sharp told me that Dr. Bell was the one who came up with Cortexiphan, in 1981."

"Yes," Walter concurs. "Belly did create the Cortexiphan. But it wasn't working visibly at that point—quite frankly, it wasn't designed for immediate results. It was designed for results that would take decades to see properly. The people in Braincamp desperately wanted something that would work immediately."

"Which is where you came in."

He nods. "They were hoping that I could provide them with something with a more rapid rate of brain increase. Something that granted results within their 6 week time period."

"Did you succeed?"

Walter chuckles, looks at the buildings as they pass by his window. "I'm not sure what you could define as success, Olivia, in this case. Did I give them something that did what they asked? Yes, I did. Did the children involved show immense and rapid brain growth, particularly in neural connections? Yes, they did.

"I was unaware of the apparently unnatural deaths of most of the test subjects, however."

"You mentioned a cure when you first saw Emily McManus. Did the cure have something to do with the compound you created?"

"Well, yes, in a way it did. All the children were reporting headaches and other basic ailments. I agreed to help the McManus twins if they would keep Peter safe." He looks over at Olivia. "I knew their father. The twins were taken for reasons not unlike Peter's. He and I made the agreement: they would protect my son, and I would 'undo' whatever damage those awful men were using my compounds to inflict on those poor children."

"Do you think you could undo whatever the Cortexiphan has done to me?"

Walter merely looks over at Olivia, confused.