Empty-headed as usual

I'm stuck on The Trickster Society, or as its shiny new title is, Shadow Crossing (100% more urban fantasy in that title! 100% less fun!). I have no clue how to tie everything up with a proper whizbang ending. I'm around 77k words in and have maybe 2k more that I can write without having to make a decision on the plot.

I tried outlining the ending last night, but I kept getting bogged down because, yes, it's hard to outline a big mental blank spot. I think the main problem is that this book's ...