'Grey's Anatomy' Premiere Trailer Debuts, Teases 'Station 19' Crossover Event - Watch Now!

The trailer for the season premiere of Grey’s Anatomy looks like it’s gonna be a huge event!

The premiere is actually a two-hour crossover event with season 18 of Grey’s and season 6 of Station 19. It promises that “the biggest cliffhangers from last season will be answered.”

Click inside to watch…

The trailer also teases that someone from Meredith’s past will come back. Could it be Addison Montgomery (played by Kate Walsh).

Three former Grey’s Anatomy fan faves are actually returning for the new season, if you didn’t see this news already!

Tune in on Thursday (September 30) to catch the premiere of Grey’s Anatomy and Station 19 on ABC.

In the meantime, catch the debut trailer for the premiere of both ABC shows embedded below…