(read as e-book)
What's it about?
It's a science fiction book set in the present day (mainly 2017-2019), told from the perspective of two characters: Barry a cop, and Helena a neuroscientist. Barry is investigating a mysterious case of False Memory Syndrome (FMS), while Helena is developing a device to manipulate memory. Unsurprisingly, there is a connection.

Spoiler

It turns out that the device that Helena is developing, a chair, allows people to actually travel back in time to a particular memory. Once time advances to the point where the chair was used to send the person back, people regain their memories of the original time line, if the new and original timelines have diverged from their perspective. Hence FMS. Helena and Barry eventually link up, and much time travelling shenanigans ensue. The chair is at first a secret, but eventually enough major events are affected that everyone on Earth is regaining memories of altered timelines. People are so disturbed once they regain their memories, that they keep on launching nuclear holocausts, trying to wipe out the US and destroy the chair. Helen keeps on going back in time to when she was a 16 year old, using her new found time to try and find a way of preventing people from regaining their memories. She keeps on linking up with Barry, who doesn't have memories of his previous lives with Helena, but believes her and helps her. Barry only regains his memories when everyone else does, just before the nukes are launched.

What did I think?
It started off a bit slow. It picked up, and the last third was bananas in a good way. I couldn't stop reading. It became a real page turner. The relationship between Helena and Barry was very powerful.

At first I thought the memory-time connection was a bit gimmicky, but in the last third of the book it became a really good hook that actually seemed plausible. I think that this was a good book to read shortly after The Order of Time which also addressed the relationship between memory and time.