"There are many possible reasons," Gellert responded. "He probably has judged the Minister too secure to reach. I'd imagine he'd be more interested in her husband, though. From what I gather from the history books, he was inside Riddle Box's inner circle. Surely there would be information there he'd want."
"Or perhaps the obsession with your son is to distract you and the rest of the Ministry from what he's been up to?" Grindelwald shook his head. "Not that I would give the brat that much credit, but it is an avenue worth considering. Let's not forget he would have access to similar history books as just about anyone else. He would know what he was once able to do."
Gellert took a deep breath as he pondered the question. "Is there a popular cultural icon? Someone whose death would affect a lot of the population..."