I was thinking about the ending to Secret of the Scarlet Hand the other day, and I really like it. Not the ending itself when Nancy tells everyone what happened afterwards, but the in-between part right after solving the final puzzle, but before Nancy starts talking. That's usually when fun stuff happens, like shoving the culprit into the mud in Last Train to Blue Moon Canyon.
In Scarlet Hand, this section has the three good characters standing together, looking happy and saying ancient glyph-like statements. It's nice to see them all together and happy, but I really have to wonder how they got there so fast. Where they there all along? If that's the case, why didn't they stop the culprit or try to help Nancy out of the last puzzle?
The part I really like is just after that, when we see the culprit realize that he or she has been foiled by Nancy. The culprit then shouts, "Confound you, Nancy Drew!" in a corny fashion. What can I say? I like it when villains are overly dramatic about being defeated. It's fun.