Back at the hotel agent learns about an unexpected guest, but the situation soon lightens up, as the men introduces himself as the detective working for Jack Dupree. After things went wrong for Jack detective decided to set things straight on his own. After talking to her guest Nicole goes down to the reception desk for the Po casket, which she then takes back upstairs. She asks the detective about it and decides to open it. It's shut firmly, and doesn't open until Nicole uses the cross.
Inside she finds a journal and some scraps, which turn out to be the pieces of some kind of map after she pulls them out (left click on the open casket). After consulting the detective she decides to put it back together (right click to zoom in). Map fragment, composed from the scraps needs to be put together using sticky tape, otherwise it will crumble back right as you zoom out. Use the right mouse button to rotate the pieces and left to move them and try to fit them together. The reconstruction of the map can be seen on the picture above.
Another talk to the detective concludes in Nicole's decision to visit the author of the letters, Marc Taine. (Green flag on the GPS).