Private detective Tatyana Ivanova is investigating the death of small businessman Nikita Govorov, who burned down in his own garage. The first candidate for the role of murder suspect is the widow, Svetlana Govorova. Nikita's mother furiously blames her daughter-in-law for her son's death, but can we believe the words of her mother-in-law, for whom Svetlana was enemy number one for many years? Ivanova is confused by many things in this version that lies on the surface. Her long experience as a private detective tells her that not everything is so simple and obvious in this extremely complicated case...