A woman killed on a beach in a random attack by a stranger suffered 10 knife wounds, including one to the heart, a court has heard.
Amie Gray, 34, was stabbed with “severe force” at Durley Chine, Bournemouth, on May 24, Winchester Crown Court was told.
Her friend Leanne Miles, 38, suffered 20 knife wounds and was lucky to survive, prosecutors said.
Nase Saadi, 20, from Croydon, denies charges of murder and attempted murder but has pleaded guilty to failing to give police access to his mobile phone.
Mr Saadi spent a month planning a random murder and researching beaches and weapons, the court previously heard.
Sarah Jones KC, prosecuting, told the jury: “He obviously wanted to know what it would be like to take his own life.”
The pathologist Dr. Basil Purdue said Ms. Gray died from multiple stab wounds to the chest and arm.
In his statement, he said a knife stab “cut deep into the sternum” and penetrated the heart.
He said another stab wound severed an artery in the victim's left arm and caused severe bleeding.
Ms Miles' injuries were mainly to her back, the pathologist said.
The court heard she had blood in the chest cavity around her right lung and a cut to her liver.
He concluded: “All injuries are clearly lacerations… as a result of a stab with a knife with a single sharp edge.” He said that the blade was no longer than 5-7 cm (2-3 inches) must have been.
Both women apparently tried to fend off the attacks with their arms, he added.
Previously, the court heard how the two women were attacked as they sat on the sand watching the full moon after lighting a fire.
Ms Gray, a football coach from Poole, was pronounced dead at the scene.
In a video played in court on Monday, Ms Miles described pleading for her life for the welfare of her children.
Three days after the attack, she said from her hospital bed: “I just remember us turning around and looking at this boy.”
“He walked up to me first – because I remember Amie saying, ‘What are you doing? Get off her.'”
With her voice shaking with emotion, Ms. Miles described how she lost sight of her friend as she fled, but heard her say, “Get away from me.”
She continued: “He came at me again and kept stabbing me.
“I said, 'Please stop, I have children.' And then I think he started to leave, he walked away.”
In March and April, Mr Saadi conducted internet searches for “deadliest knife”, “machete” and “which hotels don't have CCTV”, the prosecutor previously said.
From May 21 he spent three nights in hotels in Bournemouth and made night trips to the beach, Ms Jones added.
The jury was shown CCTV footage which prosecutors said showed Mr Saadi conducting reconnaissance in the area where the attacks were to be carried out.
The process continues.