Thicker Than Water: History, Secrets and Guilt: A MemoirCal Flyn was very proud when she discovered that her ancestor, Angus McMillan, had been a pioneer of colonial Australia. However, when she dug deeper, she began to question her pride. McMillan had not only cut tracks through the bush, but played a dark role in Australia's bloody history. In 1837 Angus McMillan left the Scottish Highlands for the other side of the world. Cutting paths through the Australian frontier, he became a feted pioneer, to be