7-345: Purpleton
He can certainly find when the change occurs.
Book #535 ends with the writer looking forward to his upcoming time off with Lyanna and noting the project is drawing to a close.
Then there is a time gap of 57 Cycles.
Book #536 opens with the words
| ### PROPERTY OF WILLARD ARGYLE ### |
taking up the entire first page.
He notes that he lost the previous book.
Then several pages have been torn out.
The remainder of that book is filled with what looks like math puzzles.
Oliver tosses the book aside frustratedly.
He then sends a message to the recipients from the Undercrats message asking if there’s a Lyanna in any personnel files on Abbas’ projects.