Fool's Cold (targetted for level 5)
Ingredients
Fogged Window - an important tactical issue in the scenario
City Captain - Johannes
Simple Lock - of Johannes' hair
The Moaning Diamond - just that
Financial Coup - Johannes is attempting one to regain her political seat
A Brace of Gargoyles - Thrace & Lace are the Brace
Summary: A diamond is unearthed, a foppish aristocrat (and the diamond) must be rescued, a Captain must be avenged (on the aristocrat), a gargoyle's home must be saved (along with some town or another), and the PCs may get all of the above done... or screw everyone and try for riches themselves.
Background
This scenario needs a mountainous/semi-volcanic coast and its corresponding bevy of islands; specifically, a diamond mine in a long-dead volcano. With some work (changing the ship to a caravan, and modifying subsequent descriptions), you could also do this adventure on the mainland. The PCs will be starting in a coastal trade city.
The City: The specifics of the city are not terribly important, so long as they have an aristocracy, captain of the watch roles, and docks. This scenario will add various NPCs to the city, some of them reasonably important, but otherwise it is left as undefined as possible, so you can insert this where you desire.
The Vicious Tart: This ship is well built, and very fast for a boat of any size, and it will be travelling comparatively light (further improving speed) as its cargo will consist of a single small box. The deck is built for transporting people, and has several rooms, each with a darkened window to watch the sea from.
Her crew is a bunch of roughnecks of varied ancestry, including quite a bit of half-orc. In general, they are unsavory looking thugs, big guys with mean, hard eyes, combat scars, and occasional deformities. They look like criminal dock workers, only better armed. If the PCs don't trust the crew to do the job they've been given, you've nailed it.
The captain, Uuhef, is a fierce, red-beared dwarf of harsh manner. Although pale of complexion, he spends most of his time reddened from shouting at his crew. That they put up with what he calls them is remarkable, and a possible testament to his brutal competence.
Oxwater: A port town for the mines, Oxwater is mostly docks, inns, and one tavern. The docks of Oxwater are made of tarred pine and creak and give alarmingly, with areas of warped, semi-rotted wood. The dock laborers look a lot like the crew of The Vicious Tart, just not as well armed.
There is one tavern in Oxwater, a murky affair named, appropriately enough, the Sotted Ox. The sign above the tavern's doorway is a faded woodcut of an ox leaning heavily in a doorway. Which might lead one to believe that 'Oxwater' doesn't refer to water so much as alcohol. Cheap cob pipe smoke wafts from the doorway, along with the scent of whiskey and rum. Inside, people hunch over their tables and talk quietly. The players might see a drunkard laid out on the floor near the door; ancient, wrinkled barmaids who smell of whiskey themselves; a largish miner holding the neck of a spindly sailor and talking too softly to hear, their faces only inches apart; the bartender facing out the backdoor, in the stance of a man relieving himself. It is an unpleasant place, and anyone of decent morals should want out as quickly as possible.
The proprietor (he wouldn't know the word if it bit him) is thick-handed, black-tongued half-orc who prides himself on his ignorance and lack of civilized manner. He'll serve any drink as long as it's whiskey or rum, and won't ask or answer questions about any person he may or may not have ever heard of or seen. His name is Rumy (pronounced like 'roomy').
Captain Johannes: A prominent captain of the city watch, she is an ax-faced older woman of fiery red hair and a brutally efficient manner. She has spent 25 years clawing her way to her current prestigious position, with the intent of entering politics with her years of service backing her. Unfortunately, she is a bastard, and while that would not ordinarily matter, this was publicized recently among the aristocrats who could most hinder her. She has accepted this harsh turn of events, and announced that she will finish her current year of service and then retire on her saved funds.
Note: If being an illegitimate git doesn't disqualify one in your city, feel free to pick any sort of dark secret - perhaps she's a former felon who acquired a new identity, or her father was a necromancer of uncommon vileness. Whatever works for you. She's good at her job, but she doesn't have to be nice.
Captain Johannes knows about Rupert's recent find (the Moaning Diamond, below), and is considering ways to use that.
Rupert: That individual is Rupert, a very minor aristocrat of the city. Rupert is a foppish aristocrat - he publicized the data as a kind of "Oh, did you know? And she seemed so nice!". He's also fantastically wealthy, which is the primary social grease that lets him get away with stuff like this.
Rupert's family owns the island diamond mine, and (to protect him from possible retribution by Johannes) has sent him there to oversee operations until they are assured that Captain Johannes has retired. Naturally, Rupert wanted to see the mine himself... and naturally, he stumbled across the Moaning Diamond (see below). He immediately sent a letter to his family, and his friends, and now the family desperately needs to get him and the diamond out of the mine before the thieves hit it - Rupert has many 'friends' (he's a free spender), and at least some of them are likely to be thieves' guild members.
Thrace & Lace: A sister-and-brother gargoyle team of burglars and atrocity-specialists in the thieves' guild. Although not terribly bright, they are agile and very skilled. While most gargoyles are content to lurk in the worst parts of the city, Thrace and Lace wanted more. And so they hired on with the thieves' guild.
For the most part, they are extreme specialists - they lurk, hidden, in the stony mines and steal a diamond here and there to fly to the mainland. They make a fair living, they occasionally get to rip a miner apart, life is good. Thrace & Lace have 'cordoned off' a section of the natural caverns attached to the mine for themselves; the miners blocked it off with wooden slats, but the gargoyles have long since turned that into a secret door.
The Moaning Diamond: A 50-carat diamond that would be expensive even without its unusual properties, the Moaning Diamond was strongly affected by its proximity to the heart of the original volcano (indeed, the mine has penetrated to the very center of what was once a raging inferno). It is bitterly cold to the touch (1d6 cold damage per round held), and chills its immediate area to arctic temperatures. The effect on the diamond's structure causes it to creak in very low tones... a moan, if you will. The chill also causes a temperature differential between the diamond's room and any outside, leading to fogged windows (which will be important to Thrace & Lace, below).
As a result, it is fabulously valuable to collectors, who find merit in rarity and obscurity more than any actual quality.
What no one knows (although the gargoyles will soon suspect it) is that the Moaning Diamond is also part of what keeps the volcano dormant. It formed in the heart of the volcano, by unknown causes (perhaps the act of an epic wizard, millenia ago), and began to chill the inferno. With the diamond gone, magma will begin to slowly push its way upward again.
Action
Hooks
Hook #1: Rupert's family could hire the PCs to go to Oxwater, pick up Rupert, and return. This is reasonably straight-forward, and will result in a fairly standard quest scenario, with a few tough choices along the way. Rupert's family will not mention the diamond, or, if they suspect the PCs know about it, they will mention that if Rupert is safely returned, the PCs "might be offered a job to go back and get the diamond, but we wish to ensure Rupert's safety first."
Hook #2: Captain Johannes could hire the PCs to steal the diamond from Rupert. She doesn't want Rupert killed - she wants the political funding the diamond could represent. This can easily be combined with Hook #1 - she will assure the PCs that Rupert will, in fact, have it. She knows that family fairly well. As an alternate way into this, if you have time to build up to it, the PCs could know Johannes and be asked (as friends) to help her do this; she'll still pay them (perhaps even a cut), but instead of hire-and-fire, this will be the beginning of a long-standing alliance with a City Captain who may manage to worm her way into politics after all.
Note: If you don't use this hook, Johannes hired someone else. This could easily be the tavern thugs, in the Acts & Events section below.
Hook #3: The thieves' guild could hire the PCs to steal the diamond. In this case, the PCs might temporarily ally with the gargoyles (or may be a rival, no-killing faction). This can be combined with #1 or #2 above, or both, if you want it really complicated. The guild pays better than Johannes, but Johannes has better morality (although still shady).
Twist to Hook #3: The guild is offering very excellent pay! This is because the PCs are patsies that they suspect (rightly) are working with Johannes. The gargoyles have been instructed to kill the PCs as soon as the diamond is in their claws.
Hook #4: Heck, the PCs could be after the diamonds themselves. In this version, they may pretend to hire on with one of the aforementioned factions that want the diamond, and then make a break for it. If they seem inclined, have Ship's Captain Uuhef know what's what, and offer his services for escaping on the high seas, in return for a 30% cut (he's taking the biggest individual risk). This will end with a lot of enemies, of course.
Hook #5: If you have some time to build up to it, have them know Rupert. They get a letter from him when others do, begging them to come save him - he suspects (rightly) that his family is more concerned about the diamond's safety than his, and wants them to come get him instead. They can find Ship's Captain Uuhef (the only one willing to do it), and go to rescue Rupert. The diamond travels by itself on another ship... but everyone is convinced that the diamond is with Rupert, making for an interesting voyage.
Acts & Events
However you decide the PCs get involved (there is a fairly exhaustive list above), they eventually end up on The Vicious Tart, on the way to Oxwater. The trip is reasonably uneventful, although you may throw in two of the crew getting in a fight with each other, and Captain Uuhef standing by and participating in the betting going on. The fight will be subdual only, but vicious nonetheless - Uuhef wouldn't tolerate something that costs him a crew member, unless he did it himself.
When they arrive in Oxwater, what they do depends on who they're working for. Regardless, it is nightfall and they'll need to meet Rupert at the tavern - that's how he envisions all adventures starting, you see, and he still thinks this is a grand adventure. When they arrive, the tavern is a bit chillier inside than out, but not terribly so. After you've described the tavern and the louts in it, they will see Rupert. He stands out for his finery, but is nonetheless sequestered in a dark corner. He will wave them over covertly. And then he will proceed to open his mouth and explain how he found the Moaning Diamond (he tripped, and looked down), and how he doesn't have it on him, and that he needs to get out of town, fast.
He will also mention that he thinks there is a stone statue after the diamond. He saw it in the mines, although the miners dismissed it as a "weird rock formation". He's pretty adamant on the point, but at this point his imagination goes wild and he starts imagining what kinds of things a statue might want with a diamond.
Any PCs with a good Listen check might, at this point, notice the very, very, very faint moan emanating from Rupert's waist.
At this point, a small group of thugs (whatever you think the PCs can handle) will kind of lazily wander over, and act alpha male-y. They're going to try to intimidate the diamond out of someone; if the PCs simply attack, they will fight here; otherwise, they will wait until the PCs leave the tavern, and then attack in the unlit streets.
After the fight, and a run to The Vicious Tart, the PCs (and hopefully Rupert) will get away and on to the sea. Since they are easily the fastest ship in the harbor, they now have nothing to worry about.
Except... Thrace & Lace, on silent wings, attack. They've been hired by the thieves' guild to steal the diamond, kill Rupert, and frame Johannes (by dropping a simple lock of her hair, as if cut by a sword, near Rupert's body) with the theft.
They still intend to frame Johannes, but have figured out what the gem does for their home (magma has begun seeping in one of their deeper caverns), and intend to return it to the volcano. Now it's a matter of saving their home.
They know exactly which cabin to attack. The luxurious windows of The Vicious Tart are nice, but only one of them is fogged from the interior chill. Fortunately(?), Rupert is also in the room, and he will scream as soon as the gargoyles enter the room. Depending on the PCs' preparations, stopping the gargoyles may be easy or hard, but in any case, Rupert should hold them off long enough for the fight to start.
They will fight hard, killing whoever they have to in order to get to the diamond. If one of them is killed (or knocked unconscious or below 0), the other will surrender and beg for mercy, explaining what the diamond does. If allowed to talk, the gargoyle will explain that they are guardians of the stone, set there to prevent the volcano from unleashing a terrible magma elemental. All lies, naturally, and if caught at them, the gargoyle will admit the truth - they live there, and the diamond is holding back the lava.
At this point, everything depends on what hooks you used and the PCs.
If they return the diamond to the family, hand it over to the thieves' guild, steal it and run off with Uuhef, dump it overboard... they sentence Oxwater to volcanic death, and destroy the mine that provides Rupert's family with much of it's wealth. Evacuating Oxwater could be a good mini-adventure, however.
Note: If they dump it overboard, it might be fun to have this show up later as an iceberg for another sea adventure.
If they bring the diamond to Johannes and explain the situation, she will rehire them to evacuate Oxwater, and use the destroyed mine + diamond to achieve all of her goals at once. She may even make a private offer to the family to return the diamond to the mine in return for their helping her get into politics.
If they give the diamond to the gargoyles, only Johannes will be understanding. Everyone else will become enemies. A possibly better solution might be to go back with the gargoyles to witness the magma, and to bury the diamond themselves. Then the gargoyles really will be guardians of the gem, as they don't want anyone taking out their home. Unfortunately, they'll also try to sink The Vicious Tart after the PCs leave, just to be sure word of the gem's location (and their existence) isn't spread.
Note: If Rupert was killed, his family is an enemy regardless of the return of the diamond... although if the diamond is returned, they won't show it. They'll just quietly arrange some form of backstabbing later.
Finally, the PCs may or may not prevent or clear the frame-up of Captain Johannes. If they do, she will become a staunch ally, and (when she gets to political power) a forimdable ally as well.
TWISTS
The gargoyles might really BE guardians against some powerful fire elemental. After the volcano erupts, have it come out and start ravaging the mainland. If the gem is returned, now that it's known, simply delay the elemental's return a bit...
Rupert and Johannes are actually in cahoots. Johannes doesn't actually want into politics... she wants into the thieves' guild, and Rupert's her key to doing it. He arranged her disgrace to allow her to retire without question. The gargoyles were hired to add verisimilitude, and won't kill him on the boat, regardless. The PCs will be screwed whichever way they turn in this variant...
The family is trying to get Rupert killed. He's a major disgrace, and his aunt (who owns the mine) is in cahoots with the gargoyles, rather than the thieves' guild. She doesn't really care about the diamond, it just makes a singularly good excuse.