Trace on Spring Snow

One morning, the measured life of a quiet town is turned upside down. English teacher Mila, while walking her dog, discovers a treasure of ancient coins. Before that, she was nearly hit by a famous architect—he turns out to be building an unusual house nearby for one of the city's fathers. Soon after, in Kuznetskaya Sloboda, the body of a local entrepreneur is found. His wife is suspected of the murder. She has been friends with the former owner of the plot where the treasure was hidden since childhood...

Is it coincidence or links in one chain? Why do intruders break into Mila's house when everyone knows—the treasure was taken to the police? She will have to figure everything out on her own...