"That's reasonable. I meant it when I offered help, though. What's wrong?"

"I'm a servant in the house of Edward Pickman Derby and Asenath Derby nee Waite. And--well, things have been odd for some time, but I didn't think much of it, but I found out that things went deeper than I had thought, and--I don't know if it can be fixed, but if there's a chance I have to try!" 

"Of course. If I can help I will, and if I can't I'll try anyways."

She wrings her hands. "Miss Asenath has--for as long as I've known her, had a talent for, for swapping minds with people. It seemed harmless! She always gave people their bodies back. And, and if Master Derby didn't seem entirely happy about it--well, he could have left her! He's a man, and fully human, and he could have done whatever he wanted to her, and if she needed a man's body sometimes to be taken seriously for some things and he didn't do anything about it but mope it couldn't be that serious! I thought. But. But I, I've discovered some things recently--that's not Miss Asenath!" 

...He's going to have to explain the really complicated concepts of 'consent' and 'emotional abuse' at some point isn't he.

"Who is it?"

"Miss Asenath's father," she says miserably. "Ephraim Waite." 

" - That's a horrible thing to do to someone - do you know where the original Asenath is?"

"It's believed that Ephraim Waite died years ago." 

(Eliza's face is growing distinctly redder, and her fingers are digging into the arm of her chair hard enough to do damage to the upholstery.) 

"So he might've swapped then killed her."

"Well. We have necromancy. Good necromancy. We can - I don't know how that combines, but - "

"I vote we kidnap 'Asenath' and terrorize him such that when we've got 'Ephraim' back we can coerce him into swapping back." 

" - I don't mind scaring him a bit but we shouldn't torture him. Just to make my position clear here."

"Of course not, even if I didn't mind torturing Ephraim we're going to try to get Asenath back into that body and if it's part Deep One we can't trivially resurrect it and we don't have any other healing magic." 

"Bribing him with 'hey you can now swap into your own immortalized body' might also be enough."

"I mean, if this guy knows how to swap between bodies and is okay with doing that to his own child I am not comfortable letting him run around free, I think we should turn that body back into powder once he's in it." 

"I don't really like the death penalty. Or prisons, even. We should make sure he can't hurt anyone else, but..."

"Assuming we collect the powder instead of allowing it to disperse, we can bring him back at any time. We're storing several of my ancestors and Amity's descendants that way, simply because re-introducing them to society would be difficult at this time and the resurrection has temporary vampiric side effects that we're bottlenecked on handling. And it isn't prison, either; with prison you have to sit through the time period until you can be released." 

"...Yeah, I guess that works for now. At least until we can get a workable justice system for supernatural stuff."

He pats Nereus's shoulder. "Everyone will be fine, in time." 

"But we need to fix stuff now." To the woman: "Do you know where Ephraim's original body is?"

"It should be in the Innsmouth cemetary." 

"And we were gonna go to Innsmouth anyways, since I have some messages to send to other shoggoths..."

Nod. "If I explain what's happening we may be able to exhume the remains openly, but--there are two other servants and I think they know and they're not doing anything--"

"Do you think for the same reasons you were?"

"I don't...think so."