Complex sentence: "The Beast" first kills and cannibalizes Marcia, and then Claire, while Casey stumbles upon Dr. Fletcher's corpse as well as her instructional note, and briefly calls Kevin to "the light" by speaking his name.
Split into simpler sentences: The Beast kills and cannibalizes Marcia, and then Claire, while Casey stumbles upon Dr. Fletcher's corpse as well as her note. She briefly calls Kevin to "the light" by speaking his name.