Reeling from mum Alicia's prison sentence, young Jacob throws a cup of orange juice over Val in the cafe.
Nikhil and David look stunned when the schoolboy exacts revenge on the woman half responsible for his mum's strife. The B&B owner is sitting down eating a muffin when she is attacked.
Back in May, a bleeding and furious Val called the police when Alicia punched her in the face.
Despite dropping charges, Alicia's previous record hindered her and she was forced to marry David to keep her son.
Emmerdale airs tonight at 7pm on ITV1.
> Read our spoiler for tonight's Emmerdale
> Read more Emmerdale spoilers and news