Complex sentence: Mathers also highly commended the research that went into the book, although he notes one instance where he feels that De Camp misrepresents thoughts that may have gone through trial members minds as things which were actually said in court.
Split into simpler sentences: Mathers also highly commended the research that went into the book. However, he notes one instance where he feels that de Camp misrepresents thoughts that may have gone through trial members minds as things which were actually said in court.