Dr. Ezra Blackwood is a fictional character from the book The Absent Thread by Jennie L. Morris. He is portrayed as a renowned surgeon who faces a mystery surgical catastrophe that leaves him shaken and uncertain of his skills. Seeking refuge, he retreats to Carlyle Street and The Albion, where he grapples with his inner turmoil and encounters a woman named Adelia Barker, who reignites his fighting spirit