"His name was Jason..."
When it comes to the slasher sub-genre of horror films, it's difficult to find any that are unique and bring something new to the table. Most of the ones that came out of the early 1970's and throughout the 1980's followed a particular formula: teens go into woods; teens drink & do drugs; teens have sex; teens get slaughtered. That pretty much sums up the genre, more or less. Immortalizing that formula was the Friday the 13th franchise, a series of films made specifically to cash in on the success of the original and annually provide entertainment for horror fans.