running a quick one-shot, wonder what you think. premise is,
the theives guild was torn apart by the city guard, who happen to be totally corrupt. the party's rogue has been contacted by a charismatic half-orc bard (you know, for a change) who is forming a new group of rogues. he's heard tell that the city guard has been investigating the abandoned theive's guild hall (the cover was a merchant's mansion). Franky (the bard) doesn't know why they are there but doesn't want the party to know that, so he tells them he's after documents that will implicate Litscher, the leader of the guard. the pc's don't like Litscher so they should bite. he tells them he can't go in so he wants them to investigate for him. he also wants a large cut of any treasure they find. they may or may not comply, but they already have reason to think they want Franky's favor, so they probably will. the only treasure there is to find in the abandoned mansion is a necromantic spell focus, an amulet of non-detection, and a gate key which they'll need later. this is a basic dungeon crawl hopefully it will only take one night because i'm running it as a favor for 3 players who want to play tonight. no one else can make it. i planned on using vermin as the main monstrous encounters, giant spiders, maybe some phase spiders, giant bats, giant rats, maybe a were-rat. maybe a carrion crawler. i need to flip through the MM and find some challenging monsters that fit the mode of an abaondoned mansion taken over by vermin that will challenge a 5th level wizard, rogue and cleric. of course they'll be fighting the guard a bit too.
Anyway, if you have any ideas for good encounters or ways to keep the pace up so we can finish tonight, i'd like to hear them.