Почему поют русалки

September 1811. Someone is killing offspring of wealthy London families. Mutilated bodies with strange objects in their mouths are found in the busiest places. Law enforcement officers seek help from Sebastian Saint-Cyr, Viscount Devlin, who has already uncovered more than one mysterious crime. Death follows death, and Sebastian believes that ritual killings lead to an unknown goal. And the key to all this may lie in the enigmatic stanzas of the spellbinding poem. Devlin understands that he must hurry, but the search only leads to more and more mysteries...