Hriston
Dungeon Master of Middle-earth (He/him)
This is a really cool idea for a scenario!
Thanks! I can't wait for it to start unraveling. The PCs are currently involved in a dungeon crawl and won't become aware of the legal situation until they get back to home base.
I don't know if anyone out there has recognized it from my description so far, but I'm using The Keep on the Borderlands for this, and have set it in Greyhawk. It's such a great module because you can literally do anything with it.
I got the idea for getting a witchfinder involved from a supplement somebody made for the playtest.
Shidaku's advice about "everybody has something to hide" is excellent.
I would make it clear early on (perhaps by dropping hints, eavesdropping, or official announcement) exactly which NPCs will be called upon to testify, and then make it so that the BBEG has leverage over them -- but there is a way for the PCs to remove or reverse that leverage. For example, if the BBEG bribes the mayor, the PCs can just offer the mayor more; or if the BBEG is blackmailing the banker, maybe the PCs can eliminate the blackmail evidence. At least one NPC should be easy to win over (an encouraging easy victory) and at least one should be very, very hard to win over (so that there is still some tension in the final judgement -- or not, if the PCs knock it out of the park).
This is great advice. I'm definitely going to bring in character witnesses on both sides. Influencing them should give the PCs an opportunity to get a leg up on the trial.
I also think the turnabout scenario -- where the PCs are under investigation! -- is way more interesting. However I wouldn't let the BBEG off the hook to early, as the players may give up on the legal solution and decide to just attack. So I'd have a distinct investigation phase and then a trial phase. And be prepared for what may happen if the PCs lose and some or all of them are found guilty of dark magic; maybe an ally helps them escape capture, or they get a pardon from the Prince in exchange for a favor, etc.
This was kind of the point of bringing in the witchfinder, other than letting the BBEG off the hook. Hopefully it ends up making things kind of chaotic.