Here is my rejected scenario proposal. I'd appreciate any feedback you care to offer.
INTRODUCTION:
The logging town of Falcon’s Hollow is gripped in fear. Townsfolk are being murdered in their beds, poisoned in their sleep, never to wake again. Victor Shadowgleam, a druid from Darkmoon Wood, is picking off any lumberman in a position to gain a seat on the board of directors of the powerful Lumber Consortium. Victor polymorphs into a venomous snake to slay his victims, intending to frame a local cleric of Norgorber for his crimes. Through these assassinations, the power-hungry druid hopes to slowly subvert control of the town.
SUMMARY:
The Pathfinders are sent to Falcon’s Hollow to speak with an Andoran scholar. This scholar is the sole person who knows the location of a rare artifact buried beneath the town. When the PCs arrive, they find the scholar locked in his home, refusing to speak to anyone. The man fears for his life after a series of recent poisonings. If the Pathfinders want information, they first have to put an end to the murders.
The black market can provide hints regarding jewelry stolen from one of the victims as well as poison recently purchased by a religious zealot and cleric of Norgorber. The cleric collects venomous creatures, but he is not responsible for the murders. Another suspect is the Gavel of the Lumber Consortium, Thuldrin Kreed. No solid evidence exists against him, but rumors swirl about his cruelty.
When the Pathfinders discover Victor Shadowgleam, they venture into Darkmoon Wood to defeat him in his lair. The dangerous woods are guarded by poisonous spiders and charmed boars, which must be dealt with before the confronting the murderer himself.
ACT 1: THE BLACK MARKET
The Lumber Consortium controls the town by tightly regulating trade. Local black markets occasionally spring up in defiance of these regulations. The PCs can locate a black market to follow the trail of stolen jewelry or to learn about recent poison purchases. If they stir up trouble, thieves attempt to scare them off by force.
Tier 1-2: human rogue 1 and halfling rogue 1
Tier 3-4: human rogue 2 and halfling rogue 1
Tier 6-7: human rogue 4 and halfling rogue 2 (x2)
ACT 2: DEN OF VENOM
The cleric of Norgorber acts as a red herring, but initial clues point to his venomous pets.
Tier 1-2: half-orc cleric 3 and monstrous scorpions (tiny) (x2)
Tier 3-4: half-orc cleric 3 and monstrous scorpions (medium) (x2) and spider swarm
Tier 6-7: half-orc cleric 5 and monstrous scorpions (large) (x3) and spider swarm
ACT #3: THE TYRANT'S THUGS (OPTIONAL)
The Pathfinders might suspect Thuldrin Kreed. If they voice such suspicions, Kreed sends thugs to silence them. Use this encounter if the PCs beat the previous encounters too easily.
Tier 1-2: human fighter 1
Tier 3-4: human fighter 2 (x2)
Tier 6-7: human fighter 4 (x3)
ACT #4: SPIDER NEST
The PCs stumble into a web-covered spider nest at the edge of Darkmoon Wood. The cleric of Norgorber marked the location on his map as he came here to capture poisonous pets.
Tier 1-2: monstrous spiders (small) (x3)
Tier 3-4: monstrous spiders (large) (x3)
Tier 6-7: phase spiders (x2)
ACT #5: MY LITTLE FRIENDS
Animals charmed by Victor Shadowgleam protect his woodland lair. The animals attack anyone who comes near.
Tier 1-2: boar
Tier 3-4: boars (x2)
Tier 6-7: dire boars (x2)
ACT #6: THE MURDERER'S LAIR
Victor has been watching the Pathfinders in animal form and is prepared for their arrival. For Tiers 1-2 and 3-4, the druid has a small collection of scrolls of Beast Shape III, which he uses to gain the poison ability of a viper.
Tier 1-2: human druid 4 (has already used his wild shape ability for the day and was injured in a scuffle with his previous victim)
Tier 3-4: human druid 6
Tier 6-7: human druid 8 plus deep spiked pit trap
CONCLUSION:
If the Pathfinders stop Victor Shadowgleam, the Lumber Consortium thanks them for keeping the town safe and for preventing further corruption of the board of directors. The scholar comes out of hiding, only to reveal that the artifact the PCs sought was stolen years ago.
If the Pathfinders accuse the wrong person, the murders continue, prompting further investigation. If unopposed, Victor becomes more brash, targeting board members directly and causing chaos to erupt throughout Falcon’s Hollow and the surrounding area.