Johnny Depp's lawyers in his libel suit against a British tabloid that labeled the actor a "wife beater" displayed video footage in a London courtroom Friday that they claim shows his ex-wife, Amber Heard, "attacked" her sister. The lawyers said they received the video from a "confidential" source on Thursday night, hours after Heard's sister, Whitney Henriquez, testified in court that she had never been attacked by Heard or that she was frightened of her.