Grayson looked at us, leaning back in his chair. "Even the Keller's Dairy poisoning incident remains a mystery. We investigated everything, but couldn't find a clue. I think there's something fishy here. The official conclusion at that time was that improper production processes led to issues in dairy products, and Helen's father ended up taking the blame."

"He was in prison until shortly before Helen fell ill, then he died in jail. After that, Helen got sick, had a cerebral hemorrhage, and rem