“She Couldn’t Be Mistaken” is a book by Olga Sergeevna Neklyudova, published in 1961. Description: several short stories, 139 pages, illustrations. Contents: “The Ugly Duckling”, “The Man with a Mustache” appears again, “Our Valka works in the police”, “The Beginning”, “She could not be mistaken”, “Mother and Son”, “Correspondence with Alexei Gaigulin”, “Correspondence with Alexei Gaigulin”, “A calling is to arrange the destinies of others”, “My sister Katya”, “A difficult case”, “Coincidence”, “A new case – a new page in life”