Complex sentence: Peretti's first full-length novel after 2000 was the thriller, "Monster" (2005), which played with Bigfoot legend and explored issues surrounding the "survival of the fittest" and creationist-based objections to evolution.
Split into simpler sentences: Peretti's first novel after 2000 was the thriller, "Monster". The book explores issues surrounding the "survival of the fittest" and raises objections to evolution.