Lancelot lofts an eyebrow as she starts pouring vodka into her coffee, opts to say nothing rather than question if that is wise. Not a battle for today, at any rate.

"Grey areas don't bother me," he says instead, "my life is one big grey area, a little won't be in the way. Besides which, I'm an officer of the law and you have been wronged. It's my duty to try, if I can, to see that put to rights."