[He raises his eyebrows, then gives her a small smile.]

Some of them are worth the vomiting. There wasn't anything for it, though. I did isolate and purify many of the active agents in different entheogens, making them a bit less nauseating. All my notes and samples are ...

[He stops before he says 'in my lab' or 'at home'. He frowns at himself and his shoulders tense further.]

[Walter doesn't comment further on the epiphany, his own, or her suppositions. His frown deepens and he closes up, leaving an uncomfortable silence between them.]