The Boy with the Cuckoo Clock Heart, by Mathias Malzieu

This fantasy novel is the story of young Jack who was born on the coldest night of the year, so cold that his heart is frozen. To save his life, the midwife, Dr. Madeleine, who is also a mechanical genius and suspected witch, grafts on a cuckoo clock to act as his heart. The clock dismays would-be adoptive parents, so the orphaned Jack continues to live with Dr. Madeleine and her entourage in 1800’s Edinburgh. Dr. Madeleine warns him that strong emotions may damage his fragile heart; above al...