What One Book Do You Recommend Reading?

As the mountain(s) of books grow around my house, and the unread list on my kindle gets longer (not to mention the ones I’ve not even purchased yet!) I’ve decided to compose a new page on here, solely dedicated to my TBR list.

But, as always with us bookworms, even with 30 odd books begging to be read, I’m still eager to here about new ones.

So, I’m asking – if you could recommend just one book, as an absolute must-read, what would it be? Why?