Stealth figuring out Maxwell’s lie

Stealth stopped and spun on her heel. “Maxwell’s illogical statements about magic and an afterlife distracted me from a clear line of reasoning. Once I accepted them as fact, his lie was obvious.”
“I’m not sure what you’re talking about.”
“Maxwell claims he has been here for just under a year and a half as a spirit,” said the cloaked woman. “Long enough to say he has seen every tattoo on every resident of the Mount.”
Freedom glanced at Madelyn. “You think she’s right about the sword?
“Not the sword,” said Stealth. Her masked face turned to him inside the hood. “After eighteen months, how could he not have known Regenerator was our prisoner?”

Excerpt From Ex-Communication, 488
Peter Clines
https://books.apple.com/us/book/ex-communication/id635706546