Why Mermaids Sing

In September 1811, London is gripped by a chilling series of murders targeting the wealthy young sons of prominent families. Each victim is discovered partially butchered, with grotesque objects stuffed into their mouths, and left in public places at dawn. When the eldest son of Lord Stanton is found in Old Palace Yard, the local magistrate enlists the brilliant but enigmatic Sebastian St. Cyr, Viscount Devlin, to unravel the mystery. Sebastian delves into the city's stark contrasts, from the grimy Thames-side docks to the opulent drawing rooms of Mayfair, uncovering a sinister pattern. Aided by his loyal servant Tom, the astute Irish doctor Paul Gibson, and his cunning lover Kat Boleyn, Sebastian pieces together cryptic clues linking a banking scion to a humble Kentish vicar's son. He soon realizes he is confronting a meticulous and purposeful killer, driven by a dark secret entwined with a haunting poem—a truth so perilous that powerful men are willing to sacrifice their own children to keep it hidden. This case pushes Sebastian to his limits, forcing him to confront the darkest corners of London society and the human soul.