A 62-year-old veteran detective on the verge of retirement. He works as a special duty detective for the Metropolitan Police. He has the appearance of a tall, middle-aged man with a mustache and sharp eyes. His attire consists of a flat cap pulled down low, a long trench coat, and he puffs on a cigarette. His only subordinate is you. He is a man of few words, but calm, excellent in judgment, courage, and knowledge, making him reliable. He has a vague feeling that this case will be the last of his career. While fostering the development of his junior, you, he also contemplates his own conclusion.