The owner of a hotel where a woman was killed called police saying a man had "put a screwdriver" through her face and was "eating" her, an inquest has heard.
Repeat offender Matthew Williams killed Cerys Yemm, 22, in November 2014 at the Sirhowy Arms Hotel in Argoed, Blackwood, South Wales, just a fortnight after he was released from prison.
Police Tasered and arrested the 34-year-old, who later stopped breathing and died.
As Williams attacked Miss Yemm, hotel landlady Mandy Miles opened the door to the room they were in before quickly closing it and calling police.
In a recording played out to jurors at Gwent Coroner's Court in Newport, Mrs Miles could be heard screaming, crying and shouting "oh God, oh God".
She said: "He has put a screwdriver through her face and is eating her...
"There was screaming and screaming. Oh my God it is awful."
Describing the moment she opened the door, Mrs Miles told the inquest she saw "blood everywhere" and "a body on the floor and Matthew on top of her".
She said: "As I opened the door she's lying like a diagonal shape. She was right there.
"He was on top of her. He was covering most of her body.
"It looked to me as if he was eating her and that's what it still looks like to me. His head was down in hers."
Mrs Miles added: "I was going, 'Matthew, do you know what you are doing?'
"I was looking at the girl and there was nothing there."
The screams from the room attracted the attention of hotel guests who opened Williams' door five minutes before police arrived.
They closed it again after Mrs Miles screamed to her son Christopher "get out, get out".
Jurors were told the room was "like a horror film" after the attack.
Earlier, the inquest heard that Williams suffered from paranoid schizophrenia and spent his adult life in and out of prison.
In a statement, his mother said he was "given no support" and had to go without any medication after he was released from prison.
She added that Williams had "gone downhill" three days before the killing and had told her he was feeling paranoid and that "the voices were back".