The Glittering Hour by Iona Grey
The war is over and a new generation is coming of age, keen to put the trauma of the previous one behind them. Selina Lennox is a Bright Young Thing whose life is dedicated to the pursuit of pleasure; to parties and drinking and staying just the right side of scandal. Lawrence Weston is a struggling artist, desperate to escape the poverty of his upbringing and make something of himself.
When their worlds collide one summer night, neither can resist the thrill of the forbidden, the lure of a love affair that they know cannot possibly last. But there is a dark side to pleasure and a price to be paid for breaking the rules. By the end of that summer everything has changed.
A decade later, nine year old Alice is staying at Blackwood Hall with her distant grandparents, piecing together clues from her mother's letters to discover the secrets of the past, the truth about the present, and hope for the future.