River Song (Alex Kingston) is incarcerated in her cell on the first night after apparently killing the Doctor ("The Wedding of River Song") when she hears the TARDIS. The Doctor informs her that her parents, Amy and Rory, are asleep and he is taking her out to Calderon Beta where he intends to show her the sky on the starriest night in the entire history of the universe. The Doctor also tells her that she will easily be able to break out of the prison whenever she wishes, and explains that the diary he gave her in "Let's Kill Hitler" is to help keep track of their encounters. He shows her a dress he has chosen, but says there are more in the wardrobe down the corridor if she wants another. She hurries off to look while he pilots the TARDIS to their destination. While River is still in the wardrobe, the Doctor lands the TARDIS and hears laser-gunfire outside. He opens the door as a second River enters and collapses into his arms.