Getting a peek ‘behind the curtain’ is something a very specific kind of person enjoys.  DVD commentaries and documentaries are created specifically for the sort of person that loves a certain thing so much they want to gather as much information about said thing as possible, even if that were to mean the illusion of fiction is forever ruined. In some cases this can be fascinating or even exciting (I challenge you to find one Red Dwarf fan sans stiffy whenever a DVD release day rolled round) but in most cases it feels more like Derren Brown describing how he predicted the Lottery numbers; disappointing and full of lies.  Getting into the mind of Russell T Davies is the ultimate act of peeking behind the curtain for any Who fan, and effect this book had on me was a curious one.  I was never bored, never disillusioned and never disappointed.  I was, however, terrified.