 Sally visits Larry at a DVD shop and is told that he has been documenting an " Easter egg " in seventeen apparently unrelated DVDs . The egg contains video clips of a man calling himself The Doctor , having half of a conversation with the viewer . Larry gives Sally a list of the DVDs and she leaves for the police station . There she meets DI Billy Shipton , who explains that there have been several disappearances at the abandoned house and shows her an impound lot containing a locked fake police box . Sally leaves but remembers the Yale key and returns to find that Billy and the phone box have disappeared . She immediately receives a call from a much older Billy , who is on his death bed at the hospital . She visits him and he explains that after she left the lot , he discovered the Angels trying to retrieve the police box . He then suddenly found himself in 1969 , where he met the Doctor and was asked to relay a message to Sally decades later . Billy subsequently married and started a video production house that was responsible for putting the Easter egg on the DVDs . Before Billy dies he tells Sally the Doctor 's message , which instructs her to look at the list . Sally realises that the list is her own DVD collection and that the Easter egg is meant for her . 
