Everyone must've cried their hearts out when McDreamy died. That's no question. But, what if there was a possibility if Patrick Dempsey comes back to Grey's? Merder could finally be reunited, Derek could meet his sister, Amelia's son, Derek could finally meet his daughter, Ellis. Millions of things could happen if Derek comes back! Please sign this petition and share to other people who love Grey's as much as I do.