John squeezed Sherlock's hand as they waited. As Cagnazzo worked. It was always... Not worrisome, but exciting? He wasn't sure. He blinked when the elderly demon's face lit up and then he went to get the sonogram machine.

"What is it?" He asked.

But then all words fell away when he saw the images on the machine.

Twins.

He let out a breath. "Oh my."