Crown alleges Philip John Polkinghorne murdered wife

Was it suicide or murder? That's the question a jury is tasked with considering in the high profile trial of a retired eye surgeon charged with murdering his wife. The Crown alleges Philip John Polkinghorne murdered his wife then staged the scene to make it look like her death was a suicide. The defence says she was suicidal, was on medication for depression and it was a sad case of a woman taking her own life. Amy Williams reports.