Melbourne 1927. When the Poison Pen column in The Truth newspaper shames five members of the public, exposing their hypocrisy and lies, it barely raises a ripple of interest. But when three of them end up dead, each clutching a white feather, The Argus’s senior crime reporter, Reggie da Costa, feels compelled to investigate. What is the connection between the anonymous Poison Pen and the people he ridicules: the president of the Melbourne Woman’s Christian Temperance Union, a nurse, a politician, a doctor, and a priest? What is the significance of the white feather? Can Reggie unmask the Poison Pen and bring a murderer to justice?