By Dan Bloom PUBLISHED: 13:35 EST, 6 February 2014 | UPDATED: 13:09 EST, 7 February 2014 Tragedy: Joanna Hall, 35, lay dying for five hours after she was stabbed by Steven Williams A woman whose frenzied boyfriend stabbed and slashed her 40 times named him as the culprit from her hospital bed, then slipped into a coma and died. Joanna Hall, 35, begged unemployed chef Steven Williams to dial 999 as she lay bleeding on the floor but he waited five hours - then laughed down the phone to the operator. Williams told police a mystery knifeman had broken in while he was shopping at Sainsbury's.
@highlight
Joanna Hall was killed by out-of-work chef Steven Williams in Tenby, Wales
@highlight
The 30-year-old knifed her 40 times then went out to buy whisky
@highlight
He laughed down the phone when he finally dialled 999 five hours later
@highlight
Joanna, 35, named Williams as her killer before slipping into a coma
@highlight
Jury convicted him by 10-2 after hearing of her deathbed accusation
He denied the attack throughout the trial - but the jury was shown evidence of injuries he sustained as @placeholder tried to fight him off.