Things are as they seem (guest puzzle by Brooke Husic)

What? A guest puzzle!? Absolutely, especially when it’s made by the great Brooke Husic, whose puzzles are always delightfully tricky but fair. Is there anything particularly tricky about this one? It’s called “Things are as they seem”, and I did a quick check on the solution and everything is spelled correctly and looks normal enough to me! Now let’s see if I can figure out how to attach a guest puzzle here…

[Hrm. Well, here’s a pdf if you need one.]