 Sally and Larry return to the house with several of the DVDs and a portable DVD player . They select a DVD to watch the Easter egg and Larry places another into his pocket . Sally discovers she can converse with the Doctor in the past , as he possesses a transcript that is currently being compiled by Larry as he listens . The Doctor explains that he and Martha were transported to the past by the Weeping Angels . The Angels are " quantum locked " , allowing them to move unbelievably fast when unobserved , while they turn to stone , making them become statues that are difficult to destroy , when they are observed . They will cover their eyes when near other angels to avoid looking at each other , giving them their weeping appearance . If they ever look at another angel , they become permanently locked in statue form . He warns Sally not to look away or even blink when they are around . The Doctor tells them they are seeking his TARDIS to acquire its potential power . The Doctor comes to the end of the transcript and Sally realises Larry has stopped writing it due to the presence of an Angel in the room . They make their way to the basement of the house and discover the Angels and the TARDIS . The Angels attack and Sally and Larry use Sally 's key to hide inside the TARDIS . Once in the control room , a hologram of the Doctor informs them that they have a control disk with them . Larry takes a now glowing DVD from his pocket and inserts it into the console . The TARDIS dematerialises , leaving a panicking Sally and Larry behind . With the TARDIS gone , the Angels have been tricked into looking at each other and have become permanently frozen as statues . 
