A bloodthirsty murderer who stabbed his lover in the heart after telling her to drink his blood could face life behind bars.

Ivan Griffin seemed to be 'possessed by evil' when he knifed Sabrina Mullings at her flat in Upper Norwood, south London.

The 24-year-old killer cut his own chest open before he stabbed the 38-year-victim to death and placed her naked corpse on a pink dressing gown in her kitchen.

Ms Mullings's daughter Hayleigh and her boyfriend Chaise Gore were woken up by the brutal attack, where they found Griffin yelling how he was 'releasing demons' during the attack at 5.30am on March 13.

Hayleigh said she heard screams from her mother urging her to call the police after Griffin. As she walked downstairs she described that the scene was like 'something out of a horror film' when she saw blood and saw her mother's blood dripping under the doorframe.

Ivan Griffin, 24, is facing life behind bars for stabbing his girlfriend Sabrina Mullings at her home in Upper Norwood, south London

The court was also played footage of Griffin dancing intimately with Ms Mullings the evening before the attack.

Griffin, who had been dating Ms Mullings since September last year, told Hayleigh's mother to 'drink his blood because it would cleanse her soul' and cut himself so he could 'join their blood together'.

Hayleigh said: 'I could make out what she was saying but it was very, very strained, you could hear she was in pain.'

Hayleigh told jurors Griffin sounded 'possessed by evil', describing the incident as 'something you would get from a horror film'.

Griffin fled 'in a panic' and asked Hayleigh 'you know I loved her, right?', before fleeing the house when he saw Mr Gore pick up a screwdriver.

'He pulled up his shirt and told me he had stabbed himself and showed me his wound,' said Hayleigh.

Sabrina Mullings was killed on March 13 by Griffin. She was pronounced dead at the scene after suffering from to stab wounds inflicted with 'severe force'

After Griffin had fled the scene, Hayleigh rushed to help her naked mother, whose body was 'very neatly placed' on a dressing gown.

She was pronounced dead at the scene after suffering from to stab wounds inflicted with 'severe force' - one which fractured her ribcage and delved into her heart, while the other tearing through her abdomen and liver.

Griffin was found wandering the streets by officers, where he claimed he had been involved in a scuffle with friends. After noticing blood beneath his jacket, they tried to apprehend him where he began shouting he was the son of God.

Griffin was deemed to have been trying to pass off his crimes and trying to convince jurors he was not fully in control of his actions, but it was ruled by psychiatrists that there was no evidence of mental illness.

He was convicted of murder and is due to be sentenced.