Prisoner: Cell Block H

Episode 660 (8x72)

Air date: Sep 04, 1986

Spider and Vicki attack Sarah and spray-paint her white. Incensed, Sarah takes drastic action and places poisonous chemicals in the air conditioning system, causing mass illness and evacuation of H Block. Lisa's sudden inability to speak is diagnosed as all being in her head. Joan suggests to Ann that they start a prison shop.