Tying Up Loose Ends

It's probably considered bad form to design a crossword puzzle where the theme requires advanced technical knowledge of a very specific area of mathematics, but I just couldn't resist. For everyone else, you'll now understand how I've acquired the vast majority of my pop culture knowledge: by figuring out the crossing entries in puzzles.

And this is where Knotty Grids gets its name!

PDF
PUZ (can be opened in Across Lite)
Solutions 

A Series of Unfortunate Events - SOLUTION

S
P
O
I
L
E
R
.
.
.