Complex sentence: Interest in the production inspired books by cast members William Redfield and Richard L. Sterne, who went to the length of hiding a tape recorder in a briefcase at rehearsals to get accurate transcriptions of what was said.
Split into simpler sentences: Interest in the production inspired books by cast members William Redfield and Richard L. Sterne. Sterne went to the length of hiding a tape recorder in a briefcase at rehearsals to get accurate transcriptions of what was said.