Barrie Cassidy started out in journalism as a cadet reporter with the Border Mail in Albury. In the years since he has been a court reporter and police roundsman, a political correspondent, program host, newsreader, radio broadcaster and foreign correspondent. He has worked for the Shepparton News, the Melbourne Herald, the ABC, the Australian and Network Ten, as well as in Washington and Brussels. Since 2001 he has been the host of the ABC's highly respected political discussion program Insiders, and until 2013, host of the sports equivalent, Offsiders. In the late 1980s and early 1990s, he was senior press secretary to Prime Minister Bob Hawke and then ultimately his political adviser.

Barrie's most recent book, Private Bill: In Love and War, is a biography about his father. The Party Thieves, a bestseller that traced the rapid demise of Kevin Rudd, was published after the 2010 election. An Ocean of Cricket was written with his son Adam, and captured in words and stunning photographs the emergence of cricket in the South Pacific.