Agatha Christie meets Quantum Leap!

I was hooked right from when I read the description - Agatha Christie who I LOVE, Quantum Leap which I loved, meets Groundhog Day. Sounds like the recipe for a new favorite book. And the first 5 chapters have absolutely left me wanting more! The atmosphere was so realistic and creepy, I feel for the main character who has no memory, and I am just dying to know who Anna is and what is going to happen. Will read this book whether I win or not!