Mike is sent by television.
I was a bit disappointed by the title of the final chapter which gives things away paragraphs earlier than it should have. It makes the build up to the big reveal a bit less than lackluster.
The 70’s version of the film has a stronger finish than the novel by showing Charlie’s nobility. In particular it was even better given the overall morals put forth by the book.
I find myself thinking about how solidly this book still stands today. I suspect that a slightly more modern retelling would replace gum chewing with the moral ills of using social media.