Complex sentence: As Bostanescu stalls his clients at a sports stadium, waiting for Nadia to rattle off the Swiss account numbers, Griffith attempts a rescue mission, but he remains in the dark about Bostanescu's American insider, and may not be able save Nadia and her son.
Split into simpler sentences: As Bostanescu stalls his clients at a sports stadium, waiting for Nadia to rattle off the Swiss account numbers, Griffith attempts a rescue mission. But he remains in the dark about Bostanescu's American insider, and may not be able save Nadia and her son.