Three Coffins

One of the most classic secret room suspense novels!★★★★★ "The Pyramid", created by Carl on the subject of the secret chamber, contains the "Secret Chamber Lecture Notes" that influenced later generations. It can be called a milestone that cannot be ignored in the history of world mystery literature. It is still difficult to surpass and is worshiped by readers around the world. "Three Coffins" is as important to Karl as Agatha and her "No Survivor" and Quinn and his "The Mystery of the Greek Coffins." Speaking of Professor Grimmauld's case, no matter how many adjectives are used to describe the bizarre case, even Dr. Phil's friends who love impossible crimes will never be able to find a more mysterious and shocking case in his case file. Two cases that occurred adjacent to each other in time and space were so bizarre that Dr. Phil was repeatedly frustrated. Footprints on the snow, enigmatic last words, terrifying oil paintings, discolored coats... Who is this illusory man who sneaked into the secret room like a ghost to commit murder, and then disappeared without a trace?