Drawing from his own past contributions to the Holy Souls Sodality newsletter and the writings of his brother Marians, including Fr. Donald Calloway, MIC; Fr. Michael Gaitley, MIC; Fr. Chris Alar, MIC; and more, Fr. Cambra has gathered together a collection of pieces on various elements of Catholic doctrine on Purgatory, demonstrating that it really does exist and we really are obligated to pray for the dead. Sharing a wealth of devotional practices, all with remarkable power to aid the Holy Souls in Purgatory, Fr. Dan has gathered an essential treasure trove of teaching and practice on one of the most neglected (and yet most essential) of the works of mercy.