The Fault Mirror by Catherine Fearns

Everyone sees the house they want to see… Paris, 1900: Amidst the decadence of the Belle Époque, American heiress Lydia Temple falls in love with ethereal aristocrat Séraphine de Valleiry, and builds her a whimsical castle in the Swiss mountains. The Chateau des Miroirs becomes a bastion of spiritualism until it is taken over by sinister forces during the First World War. And then it disappears. Or did it ever really exist? Oxford, 2035: Elderly professor Cyrus Field is rapidly losing his sight and his will to live, when student Haydn Young presents him with a collection of letters previously lost to history. These letters may contain the answer to the philosophical problem that has been his life’s work. But does he really want to know the truth? With war closing in, Cyrus and Haydn must decide whether to risk everything in the quest for knowledge. The mystery of the Chateau des Miroirs reverberates through the generations, connecting two souls that are destined to find each other.

All The Parts of the Soul by Catherine Fearns

Perhaps all women are witches at heart… The year is 1545; Geneva has defeated the Catholic forces of the Duke of Savoy and established itself as the center of the Reformation, with John Calvin as its spiritual leader. But peace is fragile and the city ravaged by plague, the atmosphere one of fear and suspicion. So when new rumors of witchcraft emerge from the isolated village of Satigny, Calvin sees an opportunity, and plucks a reclusive young magistrate to investigate. Henry Aubert was orphaned by plague at the age of twelve, and since then he has lived alone, consumed by fear and by the temptations he finds in the margins of his book collection. Now, for the first time, he is forced to confront the possibility of society, friendship, even love. Local healer Louise de Peney is kind and beautiful, but skirts dangerously close to the fringes of his investigation. Can he escape the horrific task he has been set? And is it too late to save a soul that has too long been turned in on itself?