I would firstly like to thank Netgalley and the publishers for allowing me the opportunity to read this book in exchange for an honest review.

While the premise of this book certainly intrigued me, and did kept me rather interested throughout, I couldn't help but end the book with a ton of questions.
Would a world with Duos/Monos really honestly work?
How did these people have time to read their whole idiary EVERY day?? And they would of had to read every single word in order to obtain any relevant information about their lives.
How does the world carry on with this system correctly? Doctors? Police investigations? Payments? Etc. Surely it just wouldn't work.
So confused.
Meh. Hoping this authors next book is a whole lot more believeable.

Couldn't get into this at all. Loved the idea me it, but the same things annoyed me that annoyed a lot of goodreads readers.

Great storyline with good strong characters. Very well written. I would recommend this book to anyone.

This book has some fantastic characters and a brilliant plot line – it has murder, lies and infidelity and had me gripped from the beginning!

The story is set in an alternate reality where people suffer from short time memory loss and have to keep an idiary to remember past events – it is a gripping book and definitely a story like none I have read before, I loved the concept and it is a really interesting book to read.

I loved that we are told the story through the view points of four different people. I don’t want to give too much away of the plot but I will say it wasn’t really what I expected so read it with an open mind from the outset to get the most enjoyment out of the story!

4.5 stars from me rounded up to 5 stars for Amazon and Goodreads – very highly recommended!!

I'm not sure whether I liked this book or not. I don't think it was for me, but I'm sure plenty of other readers will enjoy it. The writing was excellent and there were no problems with this area, I just don't think the story was for me. The story is told from the viewpoint of four main characters and was set in a world of two different types of people. Monos who can only remember what happened the day before, and Duos who can remember up to two days. This part of the story was exciting as well as being fresh and new but it did make for some questions as the book continued on and a murder had to be solved.

The people keep daily diaries so that they know what has happened in their lives but I didn't really get the point of this when they can never remember what happened anyway. It also became a little unrealistic when the murder had to be solved in 24 hours because that is all the person could remember.

I think this book was just a little too far from reality for me and I found myself questioning it time and time again which threw me out of the story.

Thanks Netgalley and the Publisher. I am not sure what sort of review I can write about this book I can honestly say that I did not get it or enjoy it and abandoned it 30 pages in.

What an intriguing novel. It is told from the viewpoint of the four main characters, an increasingly common literary device. It is set in contemporary UK but with an interesting concept. The population comprises two types; Monos who can only remember what happened the day before and Duos who have the advantage of being able to remember the previous two days. This is the major societal divide and creates a cultural prejudice against the Monos. As the novel opens an Act of Parliament, encouraging more mixed marriages between Monos and Duos is about to be given Royal Assent.

In order to combat the lack of long term memory both Monos and Duos keep diaries from which they learn facts about what has happened in their lives. This is the only way they can know what they have done. The population is therefore dependent on the veracity of what they have recorded. In the past the diaries were hard copies but with technological advancements everyone now uses an iDiary. This is a clever solution to the obvious question that if a person has such a short term memory how can she or he remember their relationships with other people.

Mark, a Duo and a successful novelist, has been married to Claire, a Mono, for twenty years. The third character is Sophia Alyssa Ayling. She claims to be the only person in the world who remembers her past without the aid of a diary. Sophia’s body is discovered in the river Cam and Mark becomes a prime suspect in her murder as it becomes apparent from her diary that they have been having an affair. The fourth character is the detective investigating Sophia's murder.

I really intriguing plot with a satisfying end. I would recommend this to people who love contemporary sci-fi.

Thanks to netgalley for the opportunity to have read an entertaining read. The book was a little bit of more sci-fi than I would normally read, but it was still a great read and the basic story line of only remembering yesterday was entertaining. I won't discuss the plot, as it will done to death, but it was a good solid read and worth your time and effort.

I don't know where to start with this one. It's a good idea but I had problems with execution.
I'll go with numbers.

1. The flaws a.k.a. errors.
Yap creates an alternate world where people have to keep diaries because the most they can remember is 1 or 2 days. Then several times through out the story people discuss or think the things a.k.a memories from well before 2 days. How on earth can someone do that if they have to check their diary first? Am I missing something ? There are several conversations in the book referring past. Also at one point, something happens in 4th july and on 8th July a character looks in the mirror and thinks about it. How?

2. Logic.
Why are Duo's superior? Is remembering last 1 day or 2 days that important?
I couldn't get past thinking this. Duo's can remember last 48 hours where Mono's can only remember 24. Why on earth is this important when the most you can remember is 48 hours. Why does it matter?

3. The lack of atmosphere
How in a world of permanent memory loss, people can hold their university degrees, write novels? What if they write lies to their diaries? There was no details of Yap's world, no atmosphere in the book. The reader is expected to adopt the rules of this world and accept them as they are.

4. The repetitions.
There were some repeats that really irritated me. The most annoying one was Hans keep repeating that he HAS TO solve this murder in 24 hours. Ok Hans, we got it. Maybe that's because this copy is still getting ready to be published, and this will be fixed but I have never seen the verb "exacerbate" being used in a novel more than once. Really.

So this is pretty much a summary of why I didn't like this book. It's also not a sci-fi. There is a short description about the enzyme and memory loss but it' probably 1% of the book. Surprise ending is also can be seen coming. So I am not sure why this book is seen as a phenomenon unless I am miserably missing something crucial here.

I actually have read this book before. So it was quite interesting to find it again after a while.

It took me a while to really get into the book. It has several narrators, all with their own personalities and motives. The book is set in a time where people are either a Mono (meaning they wake up every day without remembering what happened the day before) or a Duo (meaning they have a memory that goes back for 2 days).

To keep track of what happens, people write down their memories of the day in their iDairy. The story opens with a body of a middle aged woman being found in a river. Her death is treated as suspicious and the further we go along in the book, the more questions you will find you need to ask.

As I said, it took me a while to really get into the book, but I am glad I stuck it out. It is a very interesting read and I would recommend this to my friends.