Complex sentence: He was interrogated by Klaus Barbie who was in charge of interrogations at the prison; under such treatment Bloch apparently remained "calm and stoic" throughout, according to his biographer Carole Fink, reportedly providing no further information to his captors than his real name.
Split into simpler sentences: He was interrogated by Klaus Barbie who was in charge of interrogations at the prison. Under such treatment Bloch remained "calm and stoic" throughout, according to his biographer Carole Fink, reportedly providing no other information to his captors than his real name.