Thomas M. Santa, CSsR, the priest director of the Scrupulous Anonymous newsletter, has ministered to people with scrupulosity for more than twenty years. He is an associate faculty member and former director of the Redemptorist Renewal Center in Tucson, Arizona. He has also served as pastor of St. Michael Parish in Old Town, Chicago, and as President/Publisher of Liguori Publications.

Fr. Santa is the author of many books, pamphlets, and newsletters, including all three editions of Understanding Scrupulosity (Liguori, 3rd edition 2017) and The Essential Bible Handbook (Liguori, 2002). He offers retreats for people with scrupulosity and workshops on scrupulosity for pastoral ministers and professional therapists.