 The episode is set in the Victorian era and sees the Doctor ( Matt Smith ) brooding with the assistance of <unk> Madame <unk> ( Neve <unk> ) , her wife Jenny Flint ( <unk> Stewart ) and <unk> <unk> ( Dan <unk> ) , after the loss of companions Amy Pond and Rory Williams in the previous episode , " The Angels Take Manhattan " . He is forced out of hiding to investigate mysterious , sentient <unk> that are building themselves and meets <unk> Oswald ( Jenna @-@ Louise Coleman ) , a governess also investigating the <unk> . They discover that the <unk> are being animated by the Great Intelligence ( voice of Ian <unk> ) with the help of a man named Dr <unk> ( Richard E. Grant ) . 
