A man tricked his way into his former matrimonial home before stabbing his wife in the throat after she told him to leave, Birmingham Crown Court heard.
Nursing-home worker Sadie Hemmings managed to escape from the house and fled down the street before taking refuge at a hairdressers where she collapsed and died.
Carl Hemmings (40) has denied murdering his 39-yearold wife, attempting to murder his 18-year-old son Carlos, and also a charge of wounding him with intent. Robert Juckes QC, prosecuting, said on September 20 Hemmings had called at the Birchwood Road address just after his wife had returned home from her job at a nursing home in Moseley.
Mr Juckes said he had claimed he wanted something to drink and was let in by their son Carlos, who went upstairs.
"The next Carlos heard of what then took place between his father and his mother was when he heard a single loud scream, followed by his mother shouting his name," he said. Mr Juckes said Carlos ran downstairs to find his mother, who had already received the fatalstab wound, in the living room trying to hold the kitchen door against her husband.
He said Hemmings then rounded on his son, stabbing him a number of times to his upper body.
Mr Juckes said Hemmings later told police when his wife told him to get out he had picked up the knife and that he had then "lost it".
The trial continues.