If he's dying he's seeing the other side.

I knew a woman who was deathly ill with MRSA and she saw shadows as she was dying they became clear and solid and the hospital staff became transparent and whispery. She talked to them and the doctor yelled at her not to talk to them. They were clear and solid as anyone and then as the IV full of antibiotics started working the faded again. They're right here, all around you.