spoiler four men and ed ( jon voight ) and lewis ( burt reynolds ) and drew ( ronny cox ) and bobby ( ned beatty ) and decide to go on a rafting trip on the cahulawassee river and before it be flood . they want to have fun and to have a nice weekend in the nature . but when two mountain men cross their path and rape one of them ( bobby ) and everything begin to go to hell in a handbasket and and this nice weekend will even cost one of the four life . deliverance and which in italian be stupidly title un tranquillo weekend di paura ( a calm weekend of fear ) and be the grandad of movie like texas chainsaw massacre and the hill have eye and wrong turn and last house on the left and all the other evil nature or revenge subgenre film and and one of the scary and right next to the hill have eye . base on a book by james dickey ( who appear in the movie a sheriff bullard ) and it a chill story on how someone can go into a situation thinking he know everything and when he doesn not . and the image of the dead man hand raise from under the water and or the hand hold the rifle from the one sheet be haunt image that will never leave your mind . deliverance represent positive .