It's part human nature - S1.E7

The laptop is still missing, Alys is demanding money from Debbie and Ron for the laptop or she'll go to the police, Kevin is demanding Toms give him the money but wants Alys to stay out of it, but Alys needs the money because she thinks it's time she and Daniel moved to America, Bessie then threatens Alys to stay away. Wiliam goes to his daughter, Catrin's wedding reception where she and her new husband are happy to see him, but he gets drunk and leaves early. Rons pays two men to go the flats to shut Alys up, but when they find she isn't there, the attack Wiliam, Alys turns up and tries to save him.