The book "Hands up; or, Thirty-five years of detective life in the mountains and on the plains. Memoirs of General D. J. Cook, commander-in-chief of the Rocky Mountain Detective Association" interestingly tells about the adventures and highly dangerous moments of the life of a detective. The author, General David J. Cook, reveals the unique world of conducting investigations in the difficult conditions of the mountainous area and the boundless expanses of the plains. He shares his impressions, memories and the most vivid stories that have become key in his detective career. Readers will be able to be transported to this incredible journey, feel the atmosphere of tension and adrenaline that accompanied J. Cook during all thirty-five years of his work as a detective in mountainous areas and on the boundless expanses of the plains.