First full appearance: The Eleventh Hour
The Eleventh Hour
Amelia tells the Doctor of a large crack in her bedroom wall, which the Time Lord examines only to realise that it is a crack through time and space itself.
Opening up the crack briefly, reveals an Atraxi prison and soon after, the Doctor receives a psychic message relaying that "Prisoner Zero has escaped".
Amelia packs her bags, ready to travel with the Doctor and waits patiently in the garden for his return.
|Amy and Prisoner Zero|
Unwilling to believe who he is, having spent the last few years being being ridiculed by the village for her tales of the Raggedy Doctor, it becomes obvious that there is something in the house.
Retreiving the Doctor's Sonic Screwdriver, which had fallen when he was attacked by Amy, they escape and flee the house.
Borrowing a laptop and interrupting an online meeting of several scientific experts, the Doctor relays some instructions to them before rushing to the hospital and rescuing Amy and Rory from Prisoner Zero.
The Doctor outlines his plan, which is that he has created a virus that will broadcast the the number zero, around the globe. This is connected with Rory's phone which contaims images of the coma patients that he had previously taken.
However Prisoner Zero knocks out Amy and having been in her childhood home whilst she was growing up, creating a kind of bond, adopts the form of the much younger Amelia as well as the Doctor.
|The Doctor giving the Atraxi a good telling off.|
With the Atraxi gone, the Doctor goes back to the TARDIS and leaves before Rory and Amy have had a chance to say goodbye. On his return to Amy's house, he finds that another two years has passed.
Still angry with him, Amy decides to travel with the Doctor but only if he returns her the next day. The Doctor agrees saying that he chose her because he is lonely but really it's because he wants to keep an eye on the crack that still appears in Amy's bedroom wall.