Found my way through the Desecrated Church and down into the Ancient Tomb and found the Control Panel. It's asking for a "small and hexagonal" device to fit in there before it'll open the barriers.
I've looked every I can think of above in the church and small area of the tomb but to no avail.
A small pointer in the right direction would be greatly appreciated.
The item you need comes after the Murder quest, when you are led to find a certain suspect hidden, and after rewarded with the item to advance that quest.
