It had a short season, ending as planned right before the winter Olympics with a cliff hanger. It hadn't been actually cancelled at that point.
On another note, ABC has cancelled Invasion, meaning all three watery alien shows premeiring last fall (Threshold being the third) have bit the dust (though rumors of Invasion moving to the new CW network are swirling around.)
Invasion's been cancelled? That sucks....by the look of things, it was going to leave things on a huge cliff-hanger. And the show's totally been picking up. Back down to only 2 shows that I have any interest in watching...plus I guess BSG season 3, I guess.
It had more going on than Lost does.
I guess I'm not the target market, as at this point I watch maybe 4 hours of TV a week.
Damn. I really liked Threshold, but I was hoping at least Invasion would survive. I didn't like Invasion as much, but it really had been getting good (a little scary, too).