The owner of a suburban beauty salon sees her husband's terminal illness as a fresh start for herself. She immediately falls for a new doctor, who moves into the house opposite, with his wheelchair-using wife.

Jill decides to infiltrate Cath and Don's lives further by inviting Don round for dinner, but her plans for a romantic evening are thwarted when Cath decides to come along as well.

Jill convinces Cath to try to heal her marriage with the Caro Bibbens Celebrating Celibacy programme. Don becomes increasingly frustrated and is eventually thrown out of the house by Cath after she finds a pair of lacy split pants in his pocket.

Knowing Terry's recovery means he's about to be sent home, Jill tells him the hospital can do nothing more for him and puts him in a hospice. Meanwhile, she moves in with Don and Cath.

Cath finally stands up to Jill and throws her out of their house. Jill carries on with her husband Terry's funeral, while he remains bored in the hospice. Jill persuades Glenn, her blind date, to pay for the buffet and disco.

Don and Cathy split up. Jill kills Terry, then forces Glenn to kill Gordon the vicar with a poisoned sundae and makes him confess to the police.