While it is easy to assume that the system of criminal justice in nineteenth-century England was not unlike the modern one, in many ways it was very different, particularly before the series of Victorian reforms that gradually codified a system dependent on judge-made precedent. In the first half of the century capital cases often tried almost summarily, with the accused not being adequately represented and without a system of appeal. There were also fundamental differences in procedure and in the rules of evidence, as indeed there were in attitudes towards crime and criminals. David...