[Honestly, this man... for every good deed he does, there's some annoyance preceding or following. Van Zieks shakes his head as if in disbelief, though he can't say he's terribly surprised by anything he's learned in the course of this meeting. His tone is flat as he responds, reading between the lines.]

A mutual exchange of sorts, you're suggesting.

[He could make a snide remark about shoving the doctor into the attic, but... he holds his tongue. Besides, he does actually have a reason for coming here that has nothing to do with the detective.]

As enlightening as this conversation has been... I believe it is past time I allowed you to return to your solo performance.

[And it's better he doesn't stay around Sholmes and his banter for too long, lest he end up freezing some part of the garden by accident.]