Taking the witness stand in court, Lisa prepares to recount the ordeal she suffered at Derek's hands, but she's soon stunned when Zak turns up unexpectedly - ignoring her plea to stay away from the case.
Feeling the pressure with Zak watching on, Lisa struggles to remain focused as she is cross-examined by Derek's defence barrister.
After struggling on the stand, Lisa fears that she's scuppered her chances of getting justice. Will Derek get away with his crimes?
© ITV
Emmerdale airs tonight at 7pm on ITV1.
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