50 Essential Mystery Novels including The Woman In White by Wilkie Collins, I highly recommend this large tome. It's worth your time. I love a mystery that I am unable to unravel until the author allows. And this kept me rapt until the last.
The Little Stranger by Sarah Waters. One postwar summer in his home of rural Warwickshire, Dr. Faraday, the son of a maid who has built a life of quiet respectability as a country physician, is called to a patient at lonely Hundreds Hall.