So we come back around to where this started: the treatment bay, the shout, the nurse hurrying out with her hand over her mouth.

A second doctor moved in fast to strip the larvae out of the wound then and there, on instinct, because they looked like a horror.

And a third voice stopped him.

“Don’t touch them yet.”

That was Dr.

James Whitaker, the surgeon on call — a gray-haired man who had spent a long career on complicated wounds and had learned, somewhere in it, to slow down at exactly the moment everyone else speeds up.

“Doctor, they’re inside her leg,” the resident said.