The Brethren

Trumble, a minimum security federal prison, is home to the usual assortment of criminals- drug dealers, bank robbers, swindlers, embezzlers, tax evaders, two Wall Street crooks, one doctor, and at least four lawyers.
Trumble is also home to three former judges who call themselves The Brethren: one from Texas, one from California, and one from Mississippi. They meet each day in the law library, their turf at Trumble, where they write briefs, handle cases for other inmates, practice law without a license, occasionally dispense jailhouse justice, and spend hours hatching schemes to make money.
Then one of their scams goes awry. It ensnares the wrong victim, an innocent on the outside, a man with dangerous friends, and The Brethren's days of quietly marking time are over.