While Mel's life seems to be unraveling, the arrival of her mother, Gillian, only adds to her distress. When Gillian discovers Sean is now on the game, she offers him money to start a new career — something she never did for Mel. Lauren's job with Terence is becoming increasingly complicated, while Heather meets a married couple — Jack and Eloise — who want a threesome. It's the first time Heather's ever been paid to have sex with a woman.