Weeping Angels - Detection device

‘And in answer to your second question. I’ve met the Weeping Angels before. I detected this one using this.’ The Doctor indicated the old-fashioned tape recorder. ‘Whenever the space-time continuum goes wibbly, it lights up.’ The Doctor tapped the tape recorder in frustration. ‘Or it would do if the bulb worked. It also boils eggs. That’s not a fault, it’s a feature.’

‘Strange thing is, the Angel isn’t the source of the wibbliness,’ said the Doctor. ‘No, it’s you. ‘

‘Me?’

The Doctor peered at Mark. ‘It must’ve chosen you for a reason. I wonder why? What’s so great about you?’

‘Nothing,’ said Mark. ‘So what you’re saying is, that thing’s after me, and you don’t know why?’

***

Touch of an Angel, Chapter 1