The magical lattice spread along Butler’s neck and across his face. Blue sparks targeted the eyes, travelling along the optic nerve, into the brain itself. Butler’s eyes flew open, rolling in their sockets. His mouth was reactivated too, spewing out long strings of words in various languages, none of which made any sense.
‘His brain is running tests,’ said Foaly. ‘Just to check everything’s working.’

The Eternity Code, Chapter 3