A fourth man has filed a $15 million lawsuit against the Episcopal Diocese of Texas and St. Stephen's Episcopal School for allegedly covering up his sexual abuse at the hands of the school's chaplain.Filed Thursday in a Corpus Christi federal court, the suit is the third to accuse then-headmaster Allen Becker and other diocese authorities of covering up Jim Tucker's molestation of male students in the Austin boarding school in the 1960s. (After the publication of "Don't Ask, Don't Tell," the Pre
