A Utah court heard that a man suing Gwyneth Paltrow over a skiing accident heard a “blood-curdling scream” shortly before the incident.
Terry Sanderson, 76, said it sounded “like someone was out of control” and that he had never been hit that hard while skiing.
He accuses the actress of being to blame for the 2016 accident and is demanding compensation of $300,000 (£245,000).
Paltrow, 50, denied liability and countersued for $1 and her legal fees.
On Monday, a ski instructor testified before the jury that the actress was not a reckless skier.
Gwyneth Paltrow testified Friday that the incident in Park City, Utah, left her with pain in her knee and that she later received a massage.
On Monday, Sanderson recalled hearing the scream moments before the incident and added:
“It looked like someone had lost control and was about to crash into a tree and die.”
He claimed he had never been hit that hard while skiing and called the collision “a very, very serious slap in the face.”
Sanderson also told the court he had suffered physical, mental and emotional injuries from the event, describing himself as a “self-imposed recluse” ever since.
He claimed that his physical problems had disrupted his connections with his children, contributed to his separation from his girlfriend and caused him to lose friends.
Last week, a lawyer for Terry Sanderson told jurors that the collision at the Deer Valley ski resort was caused by the Hollywood actress’ “reckless” actions.
Sanderson recalled hearing a “very angry” male voice accusing him of causing the collision. This voice was later identified as that of Deer Valley ski instructor Eric Christiansen.
Sanderson claimed the individual insisted he was the “bad guy” and was trying to intimidate him.
Mr Christiansen claimed in his own evidence that it was “crazy” to suggest he was hostile towards Mr Sanderson, considering that instructors who get involved in conflicts with visitors “don’t last” at the ski resort.
He told the jury that Ms. Paltrow was not a “reckless” or “dangerous” skier and that she had the ability to “make short radius turns.”
Mr. Christiansen, who taught Ms. Paltrow’s son Moses that day, claimed that neither she nor Mr. Sanderson had requested help from ski patrol after the incident.
If someone had asked for help, “that would have changed everything,” he said, because when people are injured, a ski patrol has to be called to take statements and evaluate the severity of the injuries.
Christiansen also denied that there had been a “cover-up” to protect the actress.