Leonid Abramovich Yuzefovich is a Russian writer known for the series of crime fiction stories taking place in pre-Revolution Russian Empire. He also writes non-fiction books about history, and currently adapts his stories for TV serials. In 1975, he started working as a history teacher at a Moscow school and only retired in 2004 despite being in love with teaching. In 1981 he earned his Ph. D. with his thesis on Russian diplomatic etiquette of the 15th-17th centuries.