The Riddle of the Letter from the Past

When was the last time you looked into your family album? The story of young Sonya will tell you how important it is to remember your ancestors, not to hold grudges, and to understand what is truly important in life in time. A whole detective story unfolded around a very ordinary family, and its investigation was undertaken by Sonya and Trofim, along with their loyal companion - the dog Sherlock. The tangled skein of family secrets will surely be unraveled!