Dete Meserve structures her novel around four characters, each getting their own chapter in rotation until storylines start to cross. This is a difficult approach to engage with, as after the first four chapters it's hard to have any connection to a character, but in the context of the storyline it makes sense, and after a while everything does start to fit into place.Each of our four is making a journey back in time using new technology developed by Californian startup Aeon Expeditions (foun...