Grey's Anatomy finally returns and will answer what happened to the Stranded Six Five doctors (RIP Lexie) who crash-landed in the woods. Did Mark and Arizona, who looked worse for wear, survive? Did all of the docs stay at Seattle Grace? And can we please get a little happiness this season? Get caught up with where we left off with the docs and get the scoop on what's next from executive producer Shonda Rhimes and the cast of the ABC medical drama.