I might be being rather harsh with this book, but it only has itself to blame. At times, it was gripping, then at other times I totally switched off and went into a Skarsy daydream and forgot I was even reading it. I think it's a good idea - The Prestige meets Event Horizon - but the execution could've been better. I loved the end and the 'big' reveal, but - for once - I think more clarity was needed to give it a bigger punch.