"I liked The Picture of Dorian Gray," Q murmurs musingly. 'There is no such thing as a moral or immoral book.'
"You're being cryptic again," Q says, half-accusing, half-resigned. "I should think it's efficacy would be diminished at the very least," he comments, frowning.
"So, even if my conclusions are wrong, if I use the proper methods and can demonstrate the how and why of them, it's acceptable?" He nods, still frowning in thought. "As you say Severus," he sounds just the tiniest bit uncertain.
"Well, all right," Q tells him, nonplussed. "But it's for a very good cause." He scowls as ferociously as he can. "And their souls are tarnished by their own actions; let them do the purification rituals. The land I can see though. I can understand doing a ritual for that." A fragment of a song comes to him from out of nowhere I'll get you in the end and Q gets a wonderful, awful idea. A slow grin spreads across his face.