Did you hear that Cristina Yang will leave Seattle at the conclusion of Grey's Anatomy Season 10 Episode 24?
This is clearly the biggest storyline heading into tomorrow night's finale, but it may not be the most explosive.
As teased in the following sneak peek, a possible act of terrorism will hit Seattle, overshadowing the major news April has to share with Owen.
We know Yang won't be killed off, but might other doctors bite the dust in the wake of this tragedy?
Check out the above Grey's Anatomy Season 10 finale clip now and then click through pictures from the intense episode: