Recommended reading - The Profession of Violence: The Rise and Fall of the Kray Twins (1972):

The Profession of Violence: The Rise and Fall of the Kray Twins

By John Pearson.

Filmed as Legend (2015), directed and written by Brian Helgeland.

Paperback.

Published by William Collins.

First published 1972.

ISBN 13: 9780008150273

ISBN 10: 0008150273

ASIN: 0008150273

Description:

The classic, bestselling account of the infamous Kray twins, now a major film, starring Tom Hardy.

Reggie and Ronnie Kray ruled London’s gangland during the 60s with a ruthlessness and viciousness that shocks even now. Building an empire of organized crime that has never been matched, the brothers swindled, extorted and terrorized – while enjoying a glittering celebrity status at the heart of the swinging 60s scene, until their downfall and imprisonment for life.