“I Don’t Remember, I Don’t Remember, Puzzler” is the autobiography of the senior investigator Sergey Kubrin. Born in Kuznetsk, he served as a code clerk in the army, rose to the rank of captain in the Ministry of Internal Affairs, became a winner of the “Lyceum” prize, and traveled to investigate cases on the federal territory of “Sirius” in Sochi—only to return to service in Penza a year later, because “everyone has to go back home.”