For much of his youth, Lachlan Murdoch seemed ambivalent about being next in line to control the family’s global media empire. So why is his father Rupert now fighting a high stakes battle against three of his other children to ensure Lachlan becomes his successor?

Are we looking at the end of the Murdoch family's global media empire? That's the question journalists Paddy Manning and Alex Mann investigate in this special three-part series. This week, they take you inside the family's inner sanctum and examine why Lachlan, Rupert's chosen successor, may not...