Propelled into the priesthood by a family tragedy, Odran Yates is full of hope and ambition. When he arrives at Clonliffe Seminary in the 1970s, it is a time in Ireland when priests are highly respected, and Odran believes that he is pledging his life to "the good."

This story starts with a family. For now, it is a father and a mother with two sons, one with his father’s violence in his blood, one with his mother’s artistry. One leaves. One stays. They will be joined by others whose deeds will determine their fate. It is a beginning. Their stories will intertwine and evolve over the course of 2,000 years. They will meet again and again at different times and in different places. From Palestine at the dawn of the first millennium and journeying across 50 countries to a life among the stars, their destinies remain the same....

When she arrives at the hall, shaken by an unsettling disturbance that occurred during her travels, she is greeted by the two children now in her care, Isabella and Eustace. There is no adult present to represent her mysterious employer, and the children offer no explanation. Later that night in her room, another terrifying experience further reinforces the sense that something is very wrong. From the moment Eliza rises the following morning, her every step seems dogged by a malign presence that lives within Gaudlin's walls.

The Cleverley family live a gilded life, little realising how precarious their privilege is, just one tweet away from disaster. George, the patriarch, is a stalwart of television interviewing, a 'national treasure' (his words); his wife, Beverley, a celebrated novelist; and their children, Nelson, Elizabeth, Achilles, various degrees of catastrophe waiting to happen. Together they will go on a journey of discovery through the Hogarthian jungle of the modern living where past presumptions count for nothing and carefully curated reputations can be destroyed in an instant.

Part love story, part historical epic, part tragedy, The House of Special Purpose illuminates an empire at the end of its reign. Living in England with his beloved wife, Zoya, Georgy prepares to make one final journey back to the Russia he once knew and loved, the Russia that both destroyed and defined him. As Georgy remembers days gone by, we are transported to Saint Petersburg, to the Winter Palace of the tzar, in the early twentieth century - a time of change, threat, and bloody revolution.