The Sunday after Pope Benedict XVI authorized the wider use of Latin in the Catholic mass, I went to St. John Cantius Church in Chicago, which has been celebrating mass in Latin for years. In fact, Catholic priests could always use the Latin version of the 1970 Vatican II–inspired liturgy (which at St. John Cantius is called the missa normativa).
What would Agatha Christie Do? In 1971 she put her name on a petition urging the conservation of an endangered species: the traditional Latin mass, threatened with extinction in the aftermath of Vatican II. The petition noted that the preconciliar mass, a thing of beauty in its own right, was the inspiration for countless works of poetry, philosophy, music and other arts throughout the centuries.