The Flying Doctors (1986)

Season 4: Episode 3

Kimberly White is coming back to Coopers Crossing, to check on George Baxter. She brought her son Todd. Chris meets them at the airport, but Todd isn't very nice. The take a country drive, and stops in the middle of the outback to go for a walk. Todd stays by the car, but suddenly he gets frightened and starts running after Kimberly and Chris, screaming. He falls and hurts his leg. When they asked him what scared him, he says it was a snake. In hospital, Todd gets a bed next to a young boy named Danny, and they become good friends. Chris is still worried about Todd, she doesn't believe a snake scared him, and on a hunch she takes him outside. He gets completely terrified, and Chris realizes he's got agrophobia, he's afraid to be outdoors. Paula realises that Danny has a crush on her and tells him that she is going to be a big sister to him.