Complex sentence: This is a first of several'confessionals' between Superman and Father Leone; at next encounter, Superman explains how he traced the source of The Vanishing to a (n unnamed) foreign country in the Middle East.
Split into simpler sentences: This is a first of several'confessionals' between Superman and Father Leone. At their next encounter, Superman explains how he traced the source of The Vanishing to an unnamed foreign country in the Middle East.