Greetings!
Patrick, that was just beautiful!

LOL!

I loved it!
You know, with all the squirming that the pathetic party is probably going through, with some of the justifications tossed about, I had a vision of a similar scenario in my head. I couldn't agree more! I can even imagine the players saying and acting just like that, too. Jeez, I hope they swing! This kind of stupid scenario should be an object lesson to them in stupidity, and how the price of being evil can be steep indeed. And swift.
Is it any wonder why such typical, evil brigands like these characters end up like this? I mean, this is the usual result and short lifespan of brigands like this. In the fantasy world, and in real life, such characters don't usually last very long. They rape and kill for a couple of weeks, maybe get to live high off the loot they have stolen from others, before the King's men or what not catches up to them, usually sooner rather than later--and they then find themselves tortured briefly in some dark, terrifying prison somewhere before they are taken out before the screaming mobs of people, and hanged.
Yeah. I like that. Seems like the perfect ending to their little spree of mayhem.
You know, it's not too strange why paladins, righteous clerics, wise Rangers, and sharp wizards don't get into these kinds of problems. Whenever you have these kinds of selfish, greedy, evil rogues and mercenaries, this seems to be the result. And it's kinda sad that if there are any other characters in the group that happen to be duped by the evil ones to go along with it, that their kinda dumb wizard, or slower-on-the-punch Ranger gets caught up in it all, and they swing too. Hopefully, this party will make up some new characters, and not only think about their character's morals and motivations, but then proceed to learn from this experience, and think about the consequences to their actions before doing something like this. This is a good way to blow the campaign out the window, you know?
Indeed, it is good that the campaign have a strong, consistent law enforcement, so that the players don't think they can just run rough-shod over everyone in society--like this group did. That way, the law enforcement authority and the society at large has some ability to protect themselves from jackals like this. After all, in a world where there are vampires and dragons to worry about, wolfheads like these can't be given any slack. I can imagine the local fantasy society--like our own in the present day--take a dim view of extortion, robbery, kidnapping, and murder. Get a rope!
Semper Fidelis,
SHARK