Marcin Zdun, 40, has been charged with the murder of Aneta Zdun, 40, and 18-year-old Nikoleta Zdun after he allegedly killed them both at their home.
The women were discovered seriously injured at their home in Salisbury, Wiltshire, on June 1 and were pronounced dead at the scene.
The Tesco employee told Winchester Crown Court he thought his care worker wife had been having an affair with a colleague of his.
He said he suspected this man because of the way he was looking at him, and that he had this piercing look and fury in his eyes, and he believed he’d put a bug on his phone with the help of a friend.
Zdun said he and his wife were sleeping in separate rooms because she didn’t want to have sex any more, and he said that he believed that perhaps she had someone on the side.
He added he thought his daughter was covering up for his wife, who would go out in the evenings without saying where she was going.
The court heard he complained that his wife and daughter were like best friends and he was envious of their relationship and felt they were forcing him out of the marriage.
Zdun also said that his wife was not helping to clean the house or make family dinners, despite only working three days a week.
He said he put videos of the untidiness on Facebook, as well of stale soup in the fridge, to show people who would not believe him, and he said he didn’t have the strength to do the housework himself because he worked night shifts.
The Tesco worker said that this led to quarrels between him and his wife, and he also argued with his daughter after she wanted to have facial piercings.
Speaking through an interpreter, the Polish national said that he wouldn’t let his daughter do many things and that he wouldn’t let her have a tattoo done or piercings, but that her mother would let her do everything anyhow, so she still had them done.
He said that his wife and daughter were just sticking together and that they would just laugh at him and they would do anything they wanted to, and that they didn’t do anything around the home and that they would just go out whenever they wanted and that he didn’t know where they were going.
He added that his wife and daughter were spending his hard-earned cash and they were just laughing in his face and that he felt ridiculed and abused in his own home, but Zdun was accused by the prosecution of having a controlling nature over his family.
Nicholas Haggan QC, prosecuting, told the jury that the defendant hadn’t denied killing his wife and daughter, but had no memory of the incident.
The court heard that when Zdun was arrested at the scene of the killings, police found a folding lock knife in his trouser pocket with bloodstains on the blade and handle.
Zdun denies two charges of murder and the trial continues.
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