book and film set in american around 1950 were one brother has to.look after his learning difficulty brother who work on a farm and at the end the brother accidently kills a girl and brother has to kill him to orotect him

George and Lenny travel through the Depression-era west working at odd jobs, hoping to make enough money to buy their own farm. George must always watch over his intellectually disabled friend, and keep him out of danger, both to himself and to others. After they take a new job at a ranch, Lenny gets into far more trouble than George can talk his way out of, leaving George to decide whether to help him, or leave him to his fate.

Two ranch workers, one of them simple-minded, look for work and happiness during the Great Depression, but luck is not in their cards.