Complex sentence: The Final Chapter (also known as "Lake Placid 4") is a 2012 made-for-television horror film and a sequel to 2010's "Lake Placid 3" and the fourth and final installment in the "Lake Placid"-franchise.
Split into simpler sentences: The Final Chapter (also known as "Lake Placid 4") is a 2012 made-for-television horror film. It is a direct sequel to "Lake Placid 3" (2010) and the fourth and final installment in the "Lake Placid"-franchise.