The last and final stage involves an ultraviolet light reactor which disinfects the water. Simple laundering of clothes and linen disinfects them. When Ian discovers that Joe has HIV, he sacks him and disinfects his whole kitchen. He disinfects the fruit they touch, and they leave empty handed. Monk disinfects the Captain's office before it is put to use. The jewel is attached to the lobe and the piercer disinfects the lobe again.