The Twyford Code

How do I begin to describe The Twyford Code? Well, let me start by saying it is compulsive reading, and very, very immersive. It won't be everyone's cup of java, however.
If you've read The Appeal, then you'll know that Hallett does things differently narrative wise, and with The Twyford Code, she has opted to do things differently again. The narrative comes in the form of transcripts of audio files from an iPhone 4, made by the protagonist, Steve Smith.
The first two thirds of the book are an account of Smith's life, and his attempts to crack the Twyford Code. It is when we get to the final third that we realise that it has all been one big deception.
This book is pure genius, and Janice Hallett is the queen of misdirection. I simply can't wait for her next book.