I'd read a few less than positive reviews of this book so my hopes weren't high, however I have to say I really enjoyed it. It's definitely a slow burner and certainly a very different sort of novel to the one for which Tatiana de Rosnay is perhaps best known (Sarah's Key), so if you've read SK it's probably best to try to put all thoughts of it out of your head before you attempt this one.
Antoine Rey narrates most of the book (apart from the flashbacks to his childhood summers of the early 1970s which are delivered in the third person). I found him a very likeable and sympathetic character, which is just as well as he's going through a bit of a mid-life crisis (his wife has left him, his kids are indifferent to him, his father is cold and unloving etc) and he does indulge in a fair bit of navel-gazing and philosophising (well, he is French).
On the way back from a trip to the site of a childhood holiday, his sister is about to reveal something to him when she suddenly loses control of the car. When she eventually regains her memory and tells him what she saw, Antoine embarks on a journey of self-discovery through his family's recent history. Specifically he wants to know more about his mother's death and why senior family members closed ranks after she died and refused to talk about what really happened.
A Secret Kept is quite a sedate, thoughtful read but I did become very involved and engaged in Antoine's quest. It's also very French - lots of smoking, b*nking and beautiful apartments with concierges - and as I read it I found myself visualising it as a stylish French film with subtitles. I'm very glad I ignored the negative reviews and took a chance on this book.