Galfridus said:
I'm looking for advice / opinions on a paladin-related issue.
<SNIP situation>
Obviously this is not on the list of Approved Paladin Activities.
I disagree. While not necessarily something that would be applauded by a judge in a public session, it would certainly be well within the realm of the law and of the paladin's code. While most D&D worlds are not necessarily fully medieval in their legal makeups, unless you are playing in a fantasy version of modern-day democracy, I would be hard-pressed to find a legal system that would condemn the paladin for his actions. A public slap on the wrist, maybe, but nothing beyond that, not for killing such a scumbag.
As far as the whole alignment issue, I will only say what I tell any of my players that decides to play a paladin:
Paladins are Lawful Good, not Lawful Idiot.
What would you do to the paladin in question?
Give him a medal?
Seriously, I would, first of all, have the halfling die when returning from the cliffhanger. Scumbag.
Second, I would take the paladin's powers away for a short while. Even if the act was within the paladin's code, it was a borderline act in which he came very close to going against everything a paladin represents. Between the emotional strain of knowing what happened to his wife, the spiritual strain of knowing he hovered on the edge of the abyss, and the social strain of the ensuing investigation into the death of the halfling, the attack on the pregnant wife and whoever might be behind it all, this paladin just won't be himself fully. You can say the situation creates a sort of spiritual barrier that impedes the divine powers from manifesting.
Let the paladin sweat it out a little. Paladin or not, you can't go around doing similar acts all the time, and he should become very much aware of it. Then after a while (decide on the time secretly, I would make it about a month, or a week after there has been some resolution to part of the case, either legal absolution for the death of the halfling, or actual information leading to the discovery of the mastermind behind it all, whichever is more dramatic) he can go and get an
attonement spell cast, with the action needed to complete the attonement being one that ties directly into the next part of the investigation/adventure.
Hope this helps.