Missing Amulet

I've been everywhere. I've checked the strategy guide that comes with the game and the one on this site. Nowhere does it say how to get the amulet I need to open the floor up where the zombie monkey is. Apparently, you get it where the cable cars are, but I never found it and suddenly it seems to appear at the bottom of the page where all of the items are that you've received, but there's no answer as to what was doe to get it. I'm now stuck. Please help me find this blasted thing! Thanks in advance!

Came looking for this same answer earlier this evening, had to go back to the game where I eventually found it.

So, for anybody else trying to find the Amulet, you need to go right back to the graveyard and zoom into the gravedigger. The Amulet lies lower right in the grave. Just clicking on it doesn't collect it, you have to click on it and then click your notes 'book'. Give it a moment and it will join your items.