Dennis Oland returned to the stand Thursday at his second-degree murder retrial in Saint John.
He is accused of killing his father, prominent businessman Richard Oland, on July 6, 2011.
Defence lawyer Michael Lacy took Dennis through a series of credit card statements showing trips he and his wife, Lisa, had taken to Italy, Hungary and England.
Dennis told the court he was there to look into family history, and when asked if any of the trips were a necessity, he said no.
When asked if he was at all concerned about the costs and the fact his debt was climbing, he replied no, not at all.
He said upon returning, he was looking forward to sharing his findings with his dad because they both had a love of family genealogy.
In the afternoon, Lacy questioned Dennis about why he had gone to visit his father on July 6, 2011.
He said he wanted to show him some family history documents and tell him about his fact-finding trip to England earlier in the spring.
Dennis said he left the office and contacted his wife at 6:36 p.m. to say he was on his way home.
Lacy asked Dennis if he changed his clothes, put on overalls or a jumpsuit before he left for home, and he replied no.
The lawyer told Dennis the Crown will argue he used a sharp tool or weapon, swinging it 45 times at his father, bludgeoning him to death.
Dennis replied, “That is absolutely ridiculous. I am not that kind of monster. I would not do that to my father or any person.”
The defence is expected to wrap its examination of Dennis on Friday morning before cross-examination by the Crown begins.