From the back:

Phillip Carter was an innocent man, convicted of fraud.
But gradually the injustices and cruelty of six years in prison erode his principles. He suffers agony when he is strung up by his thumbs. He becomes addicted to morphine.
Nor does release solve his problems. Has his wife been faithful to him, or was she having an affair with Sullivan, his lawyer? What should Carter do about it? he has already killed one man in a prison brawl...

Enjoy!