Siobhan Nash-Marshall holds the Mary T. Clark Chair of Christian Philosophy at Manhattanville College. She is the author of many academic books and articles on metaphysics – Participation and the Good: A Study in Boethian Metaphysics and Boethius's Influence on Theology and Metaphysics to the 1500s –and the problem of evil – most recently Free Will, Evil, and Saint Augustine and Evil, Pain, and the Problem of Properties – she has also written books and articles for the general public – Joan of Arc: A Spiritual Biography and What it Takes to be Free: Religion and the Roots of Democracy. In recent years, Nash-Marshall has devoted a lot of attention to genocide and genocide negationism. She has published articles on the topic – "Negazionismi," "Lies, Damned Lies, and Genocide," "Levi, Arslan, and Responses to Genocide" – and lectured throughout the world on it. The Sins of the Fathers is her first book length treatment of the topic. After the breakout of the war in Syria, Nash-Marshall and some friends founded CINF, through which they attempt to help the ancient Christian cultures of the world which are presently in peril.