The movie's director, Tobe Hooper, was also influenced by a book called The Texas Chainsaw Murders by Harold Schechter. Schechter's book tells the true story of a group of teenagers who were murdered by a serial killer in Texas. Hooper was so fascinated by the book that he decided to make a movie based on it.
The Texas Chainsaw Massacre was released in 1974, and it was an immediate success. The movie's graphic violence and disturbing subject matter made it a must-see for horror fans. The movie has since become a cult classic, and it is still considered one of the scariest movies ever made.