Scene where prisone uses nail file to remove leather cuff from wrist

Imprisoned in the 1940s for the double murder of his wife and her lover, upstanding banker Andy Dufresne begins a new life at the Shawshank prison, where he puts his accounting skills to work for an amoral warden. During his long stretch in prison, Dufresne comes to be admired by the other inmates -- including an older prisoner named Red -- for his integrity and unquenchable sense of hope.

Documentary about the movie.

At an island penal institution, new prisoners are brought in one-by-one, and introduced to the harsh realities of prison life. They are put in fetters, sent to perform hard physical labor, and treated brutally. One convict manages to cut through the bars on his cell window. He climbs out, steals a boat, and begins a desperate attempt to escape from the island.

An attractive young woman drives through the countryside, thinking about a man, stopping to change from a tee-shirt to a sheer dress. She enters a prison as a visitor, is subject to a careful search, and is placed in a plain room with cheap metal furniture. A guard brings into the room the man she's been thinking about, removes his handcuffs, sits him down in a chair across from her, and hands him a towel and bar of soap. The guard leaves. She asks the prisoner what happened, and he begins an explanation. Where does this lead?