Sean Aylmer speaks to Siobhan McKenna, Australian business figure and now author of Man in Armour.  Siobhan is one of the most well-regarded executives in the country as Group Director - Broadcasting for News Corp Australia.  She’s also a director of Woolworths and Nova Entertainment among others, and is the current Chair of Foxtel, Fox Sports and Australian News Channel, and the former Chair of NBNCo.  But in this interview, the focus is on her debut novel - and how her experience in business shaped the story and the characters.