A father told his GP he thought his son had tried to kill him just 24 hours before he was killed with a shotgun, a court has heard.
Robert Seddon survived after his son Stephen allegedly drove a car into a canal with his parents aboard, in a fake road crash designed to kill them for their will.
Robert Seddon later confided in his GP he now believed the canal "accident" four months earlier had been a deliberate attempt to kill him, the court heard.
The next day Stephen Seddon went to the house in Sale and shot both parents at close range with a sawn-off shotgun, it is alleged.
The day before Mr Seddon and his wife Patricia, 65, were shot dead he had an appointment with his GP, the court heard.
Seddon, from Seaham, denies two counts murder and two counts of attempted murder over the canal incident earlier that year.
– Peter Wright QC, prosecuting
"He had previously expressed a view the canal incident was an accident.
"By this time he was expressing his concerns to his GP that his son had tried to kill himself and his wife when his son drove into the canal."