Shark survivor Leah Stewart speaks with Tracy Grimshaw Nine’s fascination with sharks this year continues with shark survivor Leah Stewart to speak with Tracy Grimshaw on 60 Minutes later this month (an unusually early announce by Nine). Head of Longform Current Affairs and Investigations and Executive Producer of 60 Minutes, Kirsty Thomson, said: “We are honoured to provide Leah with the opportunity to share the events of 13 June and the days and weeks that followed.