Val discovers she's pregnant, but her joy proves short-lived upon discovering the father's identity.

Karen is committed to a hospital for detoxification. Sumner discredits Mack and asks for his resignation.

Lilimae tells Joshua she's his mother. Abby plots revenge versus Sumner. Karen tells Gary about her condition.

Sumner tries to repair his relationship with Caulfield. Ben has a new admirer at the station.

Abby learns Val's children could be heirs to the Ewing fortune. Gary's tries to reunite the MacKenzies.

Tom is summoned to Sumner Group headquarters to investigate a tragedy; Jane Sumner is summoned again to Knots Landing; Mack considers giving up the Oakman investigation.