The Devil is in the Details

Sonya Mendeleeva suspected that something was wrong in the neighboring apartment. Otherwise, why haven’t the elderly father and his not entirely healthy son been seen for so long? Sonya’s worries were not in vain: it turned out that the neighbors were no longer alive, although the causes of death were quite natural. But then why are there double safe doors in their completely ordinary apartment? What treasure are they hiding? From the diary she found, Sonya realized that it was a lifetime edition of poems by the famous English poet William Blake. But how did this rare artifact end up with the neighbors and where should she look for it now? Sonya did not know that along with the answers to these questions she would also find the main man in her life…