Big Brother is Coming: Part I - S1.E14

A "surprise" birthday party for Jack astounds Will when his estranged older brother Sam turns up at the fete at Grace's invitation. Not only do sparks fly between the brothers, but electricity of a different sort crackles between Grace and Sam. Meanwhile, Karen flashes her platinum card for Jack as the pair shop until they drop at a boutique where the snooty salesmen previously had snubbed Jack.