He wants something from you before he'll talk
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From: Ambition: Nemesis
You'll need to pay the hefty bill he's run up. At a rat-catcher's public house, the bill is generally payable in rats. "Talk" is optimistic. His speech is a sort of grunting, drunken, spittle-flecked dialect from somewhere the far side of rural.
Unlocked with 6 x Rat on a String
That should cover it
You pay off the publican. The Mumbling Bee-Keeper arranges to meet you tomorrow, at the somewhere. Somewhere on the – ? By the – ? After the fifth attempt, he scribbles down the directions for you.