VERY glitchy on the diagramms. On the first one, though I ve cleaned with the mop, the diagramm WASN'T in the diary. I missed a page .Same with the second diagramm . Nothing in the diary . And inside the Tom's safe, there was ONE book, but at the headquarters library, the puzzle asked for TWO. So, I never solved the puzzle with the presidents books ...And quitted the game . ΗUGE dissappointment...