The daughter of a man allegedly murdered by his GP has given evidence on the third day of his trial.
Dr Howard Martin arrives at court for his trial for murder
Dr Howard Martin, 71, is accused of murdering Frank Moss, 59, Stanley Weldon and Harry Gittins, both 74, with morphine overdose injections.
Mr Moss' daughter Alison told the court because he was a doctor she did not question the amount of drugs he gave.
Dr Martin, who practised in Newton Aycliffe, but now lives in Penmaenmawr, Conwy, north Wales, denies murder.
Mr Moss had been diagnosed with lung cancer, which was later found to have spread to his brain.
Miss Moss told the court she had arrived at her father's house with her family on 13 March 2003 and while they were there the doctor arrived.
The GP has pleaded not guilty to all charges
Teesside Crown Court heard Dr Martin first visited Mr Moss on the afternoon of 13 March and while alone with his patient, gave him an injection of 60mg of morphine.
Later that night, he returned to Mr Moss' home in Eldon, near Bishop Auckland, County Durham, and gave him a second injection.
Miss Moss said: "He said he was going to give my father a top-up injection, which I thought was quite strange because my father had not woken up since the first one.
"But I thought with him being a doctor he knew best, so I didn't ask any questions."
Miss Moss told the court she had been surprised to see Dr Martin remove a ready-made syringe of morphine, give it to her father and then put it back in his bag.
The court heard Mr Moss died in the early hours of the following morning.
Under cross examination, she admitted she had discussed with her father the fact he was going to die, but never thought it would be so soon.
The trial continues.