The Room by Hubert Selby Jr

Secluded in his remand cell, a small-time criminal surrenders himself to sadistic fantasies of hatred and revenge. Selby's second novel is a claustrophobic descent into the tormented soul of a man trapped in a loveless society.
”Selby's place is in the front rank of American novelists; to understand his work is to understand the anguish of America.”—New York Times Book Review
Born in Brooklyn New York, Hubert Selby Jr. achieved international recognition for Last Exit to Brooklyn. His other books include The Demon, The Willow Tree, and Song of the Silent Snow.