Amber Heard's sister Whitney Henriquez testified for the first time and shared shocking details about Johnny Depp's alleged abuse following cheating accusations.

After Heard's cross-examination, the Fairfax County Circuit Courthouse in Fairfax, Virginia, heard the testimony from her sister, Henriquez. She began talking about the incident that occurred at one of the actor's penthouses in March 2015.

At that time, she was purportedly staying in one of those properties and woken up after her sister stormed into her room.

The "Aquaman" actress repeatedly told her that Depp cheated on her.

"Can you believe he's cheating on me? Your f**king brother is cheating on me," she quoted Heard. Henriquez previously said she referred to the actor as her brother.

After that, she went to the kitchen to talk to the "Pirates of the Caribbean" actor, who was reportedly drunk.

Henriquez claimed that Depp denied the cheating accusation at first but eventually admitted and said that the actress drove him to cheat. From there, verbal insults reputedly came out as the estranged couple exchanged horrible things toward one another.

The sister then left the kitchen to comfort her sister on the penthouse's mezzanine level, but things turned violent then.

Henriquez testified that Depp ran up the stair and hit her back as she protected Heard. When the actress shouted at the actor and told him not to hit her before smacking him.

The screams continued after the couple locked themselves inside a bedroom.

The next day, she allegedly saw Heard's closet had been completely wrecked. Heard's team then showed a photo of the scene to the jury.

Amber Heard Had Swollen Face After Fight With "Wasted" Johnny Depp

Aside from Henriquez's testimony, Heard's team also played a 2019 video deposition featuring Elizabeth Marz.

She recalled Depp looking intoxicated while feeling combative and angry during that particular incident on that 2016 night.

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"What he mumbled was 'Get your b**** out of here.' It felt more combative than sloppy. ... It was completely the way he entered into the room - rushed in, his energy. ... It was scary. My heart was beating really quickly, and I freaked out," she said.

Despite her testimony, she clarified that she did not witness firsthand Depp abusing her friend.

Other witnesses on Wednesday included Melanie Inglessis (who said she covered up injuries on the actress's face) and acting coach Kristy Sexton.

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