luciano: after a ten day recess the johnny depp amber heard defamation trial resumes tomorrow in a virginia court room. and so does the trial by social media. cbs carter evans has more. reporter: while johnny depp s arrival at a virginia courthouse looked more like red carpet premiers, on the stand the actor is adamant. i have never struck a woman in my life. his ex-wife amber heard cheerfully detailed gripping allegations of sexual and physical abuse. my head was bashing against the back of the bar and i couldn t breathe. reporter: heard s sister could soon take the stand for the defense along with johnny depp s ex-girlfriend ellen barkin. how important is it that amber heard s had witnesses for her. it is vital. if they are credible witnesses, then i think it could really hurt depp s case. all she has to show is that there is at least one instance of domestic violence.