He watches her carefully, making a mental log of all her tics and tells.

"Excuse me?" His brow furrows. "You can walk through walls?"

And then it hits him, all of a sudden. The condition he found Bucky in when he staged the rescue op, Schmidt's diatribe against humanity, the next step of evolution, the way Sinthia's hand almost seemed to sink into the wall as she backed away...

He peers at her hand again, the line between his eyebrows deep as everything slots into place and the heat of anger builds in his spinal column. "He experimented on you."