 The Doctor ( Matt Smith ) has retreated to a monastery in Cumbria in the year 1207 to contemplate the mystery of Clara Oswin Oswald ( Jenna @-@ Louise Coleman ) , a woman he has met twice previously but who died both times . The monks disturb him one day to tell him that " the bells of Saint John " are ringing . The Doctor goes to his TARDIS and finds its exterior phone ringing . On the other end is Clara , whom the Doctor initially does not recognise . Clara , having been given the TARDIS ' number by " a woman in the shop " and believing it is a computer help line , asks for help to connect to the Internet . When Clara uses the phrase " Run , you clever boy , and remember " as a mnemonic for her password , the Doctor realises who she is . He sets off to meet her in person . 
