[Eomer of the Rohirrim]

I just had a brilliant idea.

I was reading Kant (I think he's a Hobbit from the Eastfarthing) and he claims that telling lies is irrational: because willing the telling of lies as a universally acceptable mode of practice will destroy all networks of trust, making lying impossible and self-defeating.

Now, no-one wants to feel irrational and stupid, right?

So they are convinced not to lie.

Then we ask everyone if they are innocent.

We discover the innocents, and work out by process of elimination who the Wolves are.

Simple.

I'll go first: I'm innocent.