Defence begins laying out case in Polkinghorne trial

The defence has begun laying out its case in the trial of retired eye surgeon Philip Polkinghorne. Polkinghorne has pleaded not guilty to killing his wife, Pauline Hanna, in 2021, and staging her death as a suicide. Polkinghorne's lawyers introduced their first witnesses today after the Crown spent the past five weeks presenting evidence to the court, Jessica Hopkins reports.