That mid-season finale was amazing. But also terribly sad. Spoiler Basically, Rory gets trapped in Winter Quay by the Angels, and sees himself die, thereby cementing it into time. To try and prevent it, he jumps off the building to create a paradox. Amy goes with him. It works, and they wake up in the graveyard Amy and the Doctor bounced back to earlier, after trying to land in 1938 the first time. As they're leaving, Rory sees the gravestone with his name on it, and gets shot back in time by a lone angel. Amy freaks out, and basically follows him, via the angel, so they don't have to be apart, then her name appears on the gravestone. However, they did end up together, and Amy published and put an afterword in River's book, saying they're fine and happy, and they miss him. Cut to the trailer for the Christmas Special, and we see a split second of the new companion.