*present book to show it was MTs planner
Considering that the book was not found in Indigo’s or any other room, I think the client is giving Pek the book rather than the other way around. If they are at Indigo’s room the murder has already happened so they no longer need it to get a sense of MT’s whereabouts. The only other practical thing they would do with it would be to plant it as evidence, but as I stated earlier it wasn’t at either scene.