Fr. Dan Twomey was pastor of St. Patrick’s in Natick, Mass. until 2001. Orthodox and scripturally-minded, he brought an evangelical zeal to the parish, ridding it of its dependence on fund-raising Bingo games, encouraging lay apostolates and starting Perpetual Adoration of the Eucharist. When he departed without explanation, parishioners were left guessing for the reason. This week he met with them to provide the answers.