Whitney Heard claims she instructed Johnny Depp to assault her sister Amber Heard through text message.

During her court testimony, Whitney revealed that she had a friendly relationship with the ex-brother-in-law and that at one point during her sister's marriage, she begged Johnny Depp to attack Amber.

"You testified that you had suspicions that Mr Depp was allegedly hitting your sister at some point in 2013?" questioned Mr. Depp's attorney.

"Suspicions," Whitney answered.

"And withstanding that, in June 2013 you were actually joking with Mr Depp about hitting your sister right?" continued the attorney.

"Regrettably over test messages, yes," confirmed the sister.

Did you encourage him to strike her? The prosecutor cross-examined Depp's attorney.

"I did not encourage him to physically strike her, but we were joking about it. Unfortunately, yeah "admitted Whitney.

She went on: "I did not have a complete knowledge of who I was. I never would have said it now that I know what I know."

In one of the fights, Whitney claimed Depp struck her in the back.

"Amber yells, "Don't hurt my f***ing sister!" She strikes him with a blow." She stated that Depp grabbed Heard by the hair with one hand and repeatedly struck her in the face with the other.