Complex sentence: The next day Amelia Sachs is called to a possible homicide near some train tracks downtown, her initial search doesn't bring anything up until she spots, what she thinks is a dead tree protruding from the ground near the rail tracks.
Split into simpler sentences: The next day Amelia Sachs is called to a possible homicide near some train tracks downtown. Her initial search doesn't bring anything up until she spots what she thinks is a dead tree protruding from the ground near the rail tracks.