Lock him in a room with a revolver, one cartridge, and a bottle of whiskey.
Let's go back to 'tried and true' tactics.
Put him in a giant burlap sack with a DOG, a MONKEY, and a RATTLESNAKE, then throw it over a BRIDGE.
Once he hits the water, then he can make his 'plea'.
Give me the bottle of whiskey, and I'll shoot the bastard.