User blog comment:LordJumpy/@Doctor Who Fans: "Oh No...."/@comment-5322836-20130419135757

This episode will end when the Doctor says:

"Who am I? Well, I'm the Doctor!"

-end credits-

However, considering the fact Alex Kingston is in this episode shows that she may find the Doctor's name in this episode, and deliver it to the point in Silence in the Library, where it is the end of her.