It is a life-defining moment, for James Murdoch, to describe his father and wider family in an interview with the Atlantic. Much of the rough and tumble and backstabbing – Rupert essentially pitting James against the older Lachlan, in a fight that continually vexed him because his favourite (Lachlan) never won – has existed in the public domain for years as rumour. Much of it has been proved or demonstrated within reason, either by biographers – Michael Wolff in particular – or by events, culminating in Rupert and Lachlan’s legal case to secure Lachlan’s hold on the Murdoch family trust,...