Ignasi of House Manric, eighth-circle wizard of Cheliax, borrowed from the Nidal front lines to Detect Keltham's thoughts, is going to leave the Fortress considerably more impressed with the 'Chosen of Asmodeus' than was Manohar.
Keltham's thoughts show not even a flicker of suspicion, of 'Peranza'. It doesn't even occur to Keltham to think about Glimpse of Beyond, and how he doesn't have it prepared today. The Chosen's lie seems to have been perfectly fitted to this otherworlder; from Keltham's thoughts it seems that this is something that happens often in dath ilan, even in the matter specifically of greater mastery of Law being something that sometimes produces a collapse of self-deceptions inside somebody about how much they enjoy being alive, and them not being able to live with themselves after that, and going into 'cryosuspension' early. He feels bad about not seeing it coming.
The only flicker of suspicion in Keltham, is about how it seems almost like a fear drawn specifically from his own thoughts. He rejects it after a moment's consideration; if the hypothetical Conspiracy could read his mind and get that degree of information about dath ilan, why do they need him for anything, and also there's no clear prior reason whatsoever why the hypothetical Conspiracy would need to yank Peranza off the Project in particular, that Keltham knows about. 'Base rates', Keltham thinks; this happens often in Civilization, and it should happen even more often in Golarion where people's lives are less happy.
It hardly seems like there's anything for Ignasi to do here at all. The Chosen's plan appears to be playing out perfectly. Though of course, given the catastrophic delicacy and importance of Project Lawful, it's understandable that they did call him in, just in case, for a major event like this one.