Magical Hugh explained the mission to Thomas like so: "Go to the woods and tell any old women you find that I have the cure for leprosy.
"Now it's important that you tell her these directions to get here: Hill, then River, then Glen.
"DO NOT FORGET.
A few days later, there was a knock on the door.
When Hugh opened the door, he saw the most vile, repulsive lump of radioactive waste that any creature had ever been unfortunate to lay eyes upon.
"Hello," it said. "I am Magical Sue."