River Song, River, Song

River song shows off her sonic screwdriver.

The Doctor and his companions gather in a diner booth.

The Doctor speaks to River at the diner.

Rory and River hold Amy back as they look on in shock.

River takes a closer look with Amy.

River fires ahead as Rory looks onward.

The Doctor gives firm instruction to his companions.

Amy and River listen to the Doctor.

River, Amy and Rory are puzzled by what's happening.

The cast from "Doctor Who" in the United States.

The Doctor smiles at River.

Amy and Rory speak with River.

Mels is more than just a childhood friend to Amy and Rory.

The Teselecta targets River Song.

"Hello, sweetie..." - River Song (Season 6, Episode 8)

River Song and Madame Kovarian come face-to-face.

River Song (Alex Kingston)
A “child of the TARDIS” and the Doctor’s wife, River Song is a human with Time Lord DNA. She gave her life to save the Tenth Doctor and Donna Noble, but not before the Doc uploaded her consciousness into the Library’s computer system.

“Trouble is, it's all back to front. My past is his future. We're travelling in opposite directions. Every time we meet I know him more, he knows me less. I live for the days when I see him. But I know that every time I do he'll be one step further away. The day's coming when I'll look into that man's eyes—my Doctor—and he won't have the faintest idea who I am. And I think it's going to kill me.” – River Song