"Mercy and her sister Charly live in a twilight world, going to bed just as the sun rises. Their house remains shrouded in perpetual winter, each day unfolding exactly the same as the last. Mercy has never questioned her widowed father about the way they live - and why - until one day she wakes to find a snowdrop on her pillow : a first sign of spring - and a nod towards a new future. A meeting with the mysterious Claudius unsettles Mercy and starts her on a winding path through the family's history, unearthing clues about her mother's death and their house frozen in time. Can she discover the truth without destroying her home, her father and all she has ever known?."
"Waking at sun-down and falling asleep at sun-rise, sisters Mercy and Charity are trapped in an eternal winter, every day the same as the last. But one night Mercy wakes to find a single snowdrop on her pillow: a sign of spring, light and other life. An encounter with the mysterious Claudius awakens memories of a happier time and leads Mercy to travel through the four circles of time her father has created to protect his daughters - each circle capturing a significant day in the family's past. As she does so, she weakens the reality of the eternal winter day of her present but it's the only way to reveal the truth of her family's secret and unlock an unpredictable yet hopeful future for her and her sister."@en