if you want to really terrify people and choose the devil a your subject . after all and a good deal of the population believe that he be real . therefore you be plug into a whole meaty swathe of pre exist religious and mythological imagery . and bind to cause quite a few nightmare in your young audience . this episode have all the appearance of a hollywood blockbuster . in fact and have finish watch it i flick over to another channel which be play a recent bond film and quite frankly couldn not split a hair between the difference in sfx . with a minimal cast and restrict by it situation on a space station while complete with overwhelming panoramic view of an imploding universe and it be a claustrophobic and intense a alien or event horison . the black hole outside make it feel a if the black hole weight of dark matter be press the station onto the planet and to whatever be seal inside . and a the horror be intensify by the knowledge that the dr and rise be strand and the sinister ood start channel a disembodied voice and then the character start be pick off one by one . this have all the best quality of the cream of this new dr who endeavour while girl in the fireplace and the empty child . emotionally engage and frighten and humorous all without seem cheesy . this be far scary than any amount of fly daleks . but it have to be ask and be this really suitable view for child . this be not a family friendly episode . pity the poor parent who have to put their kid to bed after this one . i be not sure i even want to see what happen next .