A "stair of Yakov is a novel-parable, whimsically ramified domestic chronicle with by a great number heroes and reply lined up a plot. In the center of novel are parallel fates of Yakov Осецкого, man of book and intellectual person, born in the end the XIX century, and his grandchild Nora - theatrical artist, personality self-willed and active. Their "acquaintance took place at the beginning the XXI century, when Nora read correspondence of Yakov and grandmother Maria and got in the archive of KGB access to his personal file.Novel letters underlay from the personal archive of author.