 The Silence 's ' time engine ' set was previously used in " The Lodger " . The Doctor describes it as " very <unk> Road " , a reference to the house the ship occupied in that episode . When the Silent reveals his species ' name to the Doctor , the Doctor has flash @-@ backs to " The Eleventh Hour " and " The Vampires of Venice " , the first mentions of the Silence . The " Eye Patch Lady " ( Frances Barber ) appears for the first time in this episode , and makes similar appearances in " The Curse of the Black Spot " and " The Rebel Flesh " before her connection to Amy is revealed in " The Almost People " . The Doctor uses the TARDIS 's scanners to detect Amy 's alternating pregnancy state . The Doctor repeats the scan with the same results in " The Curse of the Black Spot " and " The Rebel Flesh " . 
