For decades, Gideon Haigh and his mum were the only two people who really knew what happened on Jaz's last night.

Gideon has spent decades perfecting answers to questions about his brother — answers that never invited further discussion.

This year, something peculiar happened, and in a few days Gideon poured his pent-up recollections onto the page, to be turned into a book about the story of his brother, Jaz.

Gideon is in conversation with Sarah Kanowski. You can hear more ABC Conversations on ABC listen: https://www.abc.net.au/listen/program...