I had murry's skull, put it on the table where you get the watchtower key (because you can't pocket a key) and went and did the watchtower part of the tale. Came back to get murry's head and it's gone. It's not where he started on the wall, not on the table, not on the floor. And is just missing now.

Am I missing something? I am 100% certain that I placed the skull on the table and had not moved it in the >5 minutes it took me to get the watchtower key and change the clock.