This is a heartbreaking and terrifying book of what Alzheimers is like from the perspective of the sufferer, Alice - a 50 year old Harvard professor who believes her bad memory is a symptom of menopause. Instead of that though, she discovers that she is a victim of early onset Alzheimer's and that she may have passed the gene onto her children. 
 It's not a perfect book, but in a way, that's part of the appeal because it makes it feel real. We have questions, unresolved things, things we suspect happened but can't be sure about solely because we only see things happen from Alice's perspective, and as we know, Alice is a very unreliable narrator as the book progresses. It should be frustrating but somehow it just adds to the poignancy of the book because in reality, things aren't always wrapped up nice and cleanly and in this case, what we see happen, may not have happened like that at all. 
 I hope the film adaptation of this doesn't deviate too far from the book - I think what makes it successful is seeing it purely from Alice's perspective. It's heartbreaking, but it's what sets it apart from other books of a similar subject matter.