The Birthday Boy

Clara Oswald wakes a groggy Eleventh Doctor with breakfast in bed, telling him that it's his birthday, but things aren't right. He and Clara live in an ordinary house, he has an office, and Clara is preparing well-cooked food for his birthday party. In the Doctor's office, however, is something resembling the TARDIS, which the Doctor vaguely remembers; the opening it, he discovers many thousand year diaries, but is bemused to find they are all completely empty.