Not sure if it's a daily deal or a longer one.
I've been watching it and waiting for the price to drop. Hopefully it will be better than the last couple of books I've been watching like this. 
This is the blurb: "What sort of betrayal would drive a brother and sister apart?
When Grace and her brother Andrew inherit their grandmother's house, they surprise few people by deciding to move in together. But they've always got on well and the London house is large enough to split down the middle.
There's just one thing they've not taken into account though. What if one of them wants to bring a lover to the house? When Andrew's partner James moves in, and immediately picks a fight about the treatment of gay men, the balance is altered - with almost fatal consequences.
Barbara Vine's is the pen-name of Ruth Rendell, and The Child's Child is the first book she has published under that name since The Birthday Present in 2008. It's an intriguing examination of betrayal in families, and of those two once-unmentionable subjects, illegitimacy and homosexuality. A taut, thrilling read, it will be enjoyed by readers of P.D. James and Ian Rankin."