This Episode begins with Izzie, she is talking with Denny's ghost. Izzie kissed with Denny's ghost. The residents wake up at 3 am, they go to the hospital as fast as possible. Callie got knocked down by Arthur. Lexie and the other interns got caught during Sadie's appendix surgery. Meredith and Cristina saved Sadie her life. Cristina knew about Sadie's secret appendix surgery. Amazing Episode of Grey's Anatomy Season 5, just a great storyline this time. The interns tried a appendix surgery on Sadie, it had a happy end but it was very dangerous! Meredith and Derek seem to be happy together, hope this will be forever!