The woman accused of murdering her parents and burying their bodies in their back garden in 1998 told her husband of the killings a week after the incident over fish and chips, the man told police.
He said the couple then watched the Eurovision Song Contest together before agreeing to bury the bodies the following morning, a court has heard today.
Susan Edwards told police following her arrest last year that she had been staying at her parents' house in May 1998, when she heard her mother shoot her father dead.
She said Patricia Wycherley then admitted having an affair with Christopher Edwards, her husband and co-accused, and that during the argument that ensued she picked up the gun and shot her mother, a court was told.
Patricia and William Wycherley lay undiscovered in their garden in Mansfield for 15 years until last autumn.