Joe nodded calmly at William's initial reaction. It happened a lot, whenever Joe asked to be allowed access into someone's dreams. They had a habit of revealing things the conscious mind would much rather be kept hidden away.
"We don't have to," Joe said carefully. "It's not absolutely necessary, but I do think it'd be a big help."
He was slightly surprised at how quickly William agreed to, but then again, it did make a kind of sense. Joe was quickly getting the idea that William didn't do anything half cocked and, once he made a choice, he'd follow it through come hell or high water.
"Nothing much," Joe said, shoving up his sleeves. "You just need to go to sleep."