Johnny Depp and Amber Heard will return to the courtroom in their high-profile defamation case.MORE: Johnny Depp: Everything Kate Moss has said following surprise celebration at trialFollowing a week-long hiatus, Amber will be called to the stand for cross-examination by Johnny's lawyers – and there's one comment sure to be brought to the forefront. WATCH: Johnny Depp testifies in court against Amber HeardIn footage from inside the trial, Johnny and his legal team could be seen celebrating after Amber made reference to the star’s former girlfriend, Kate Moss.READ: Johnny Depp's daughter pays tribute to her mom amid Amber Heard court dramaMORE: Johnny Depp and Amber Heard trial: The most explosive moments so farAmber alleged that in a 2015 argument with her husband, she became concerned that he would harm her sister, Whitney, who was present at the time.