I bought the book after watching the American TV series, which was intriguing and complex, dealing with the aftermath of a global experiment which enabled everyone to have a glimpse of their future.
The novel, at first, disappointed: characters are changed, plot lines re-allocated and the focus shifted in the tv version to make it more dramatic. Unlike the series, which is from a security service angle, the novel shows the events from the perspective of one of the scientists, who struggles to come to terms with the implication of his vision - which shows him in a very different future than the one he's planning for himself and his fiancee.
Robert J Sawyer spends the first quarter of the novel in a mind boggling explanation of the theoretical physics underpinning the event - not for the faint-hearted. Wisely, the tv version only nods at this. Thereafter, he concentrates on the impact such a revelation has on the psyche: if we knew what the future held would we fight it, if we didn't like what we saw, or accept our fate as inevitable?
The novel wrestles with concepts of self determination, free will, fate and time as a dimension.
Don't buy the book if, like me, you want to find out how the tv series is going to end. Do buy it if you want to exercise your grey cells on some of the biggest questions we can ask about life's purpose.