Deliverance. Poster of the 1972 movie and cover of the 1970 book
VS3
Deliverance
James Dickey, 1970
movie vs book
John Boorman, 1972

Four Atlanta businessmen decide to canoe down a river in the remote northern Georgia wilderness before it is dammed. Lewis, an experienced outdoorsman, is the leader; his close friend Ed has been on several trips but lacks Lewis’ machismo, while Bobby and Drew are novices. They’ll never forget that trip into the dangerous American back-country.