With all the positive reviews talking about this being an unputdownable page-turner that will keep you entertained for two days, this review is to say that it is rubbish and only takes a few hours to read.
It had the lamest twist ever and we're probably just lucky that the characters weren't wearing tin-foil hats and discussing crab people living in the hollow Earth. Straight out of the conspiracy theory nutter handbook.
Presumably the sequel will have mind-control chemtrails being sprayed by the shape-shifting reptilian overlords who have taken the form of world leaders and celebrities because reasons.
NB: posting review on behalf of my partner.