The dialogue and puzzle for this part depends on who you choose Sully or John to be with you.
On the Projection part (from wt):
If you have John with you; go to Davies' office at the station. Take the coffee mug on her desk.
Go back to Robert. Place the coffee mug on the table.
Now we have 3 items needed for a projection. Click on sphere. Click on tape recorder, then Davies' coffee mug and then Robert green projection. Click the projector icon in sphere.
If you have Sully with you; use projection on tape player, Robert and Sully.
See the case note on the table. Read that Davies closed the case as suicide because it is not a big case and will use up resources.
Click - read the note. Read that the note written by Robert for Sarah came from a song - The Taking by the Scarlet Furies. Exit.