For young people considering a career of police or social welfare work, this story of Warden Duffy's administration at San Quentin may have some value. Born in ""Prison Town"" the son of a guard, Duffy served on the prison staff before being appointed warden. During his term Duffy inaugurated many changes to do away with brutal methods which bred resentment. There are grim stories about certain criminals, of counterfeiting, attempted breaks --and there should be a warning about the treatment of sex and homosexuality in the book which should limit its circulation to mature young people. On the whole, however, this is an absorbing record of the work of a fair-minded and competent man dealing with one of society's most tragic problems.