Tallamor's magical grease coats the area around the spider's nest. The creature slips a few times on the slickness, but its multiple legs help keep it grasping the lip of the hole that constitutes its nest.
As Sandra bounds off to the opposite side of the nest, Raun shouts out, "Sandra, wait!"
But just as the words leave his mouth, the spider bursts forth from its nest, on the side opposite where most of the grease is. Unimpeded, the monster scuttles up to Sandra and bites her in the leg, before moving away from her with surprising agility. It avoids the nest this time, apparently disturbed by Tallamor's spell. Sandra's wound is shallow, but it burns with venom, and she can feel the poison sapping her strength.
Sergei has been waiting patiently to line up a clear shot; the spider was out of its nest, and away from any of his companions: perfect. He looses, and the arrow sinks deep into the spider's carapace. It flinches, one of its legs spasming out of control.
Raun moves up, slow in his heavy brigandine, but thanks to the reach of his spear, is able to attack. He stabs the monstrous spider in the joint between abdomen and head; a few final flails of its legs, and the spider lies dying, twitching involuntarily.
Raun finishes the creature off with a final lance to the brain. Catching her breath, Sandra fights off the lingering effects of the poison, little worse for the wear. "Well fought," says Raun, "But you've got to be more careful, Sandra. If you would have stayed near me, I could have stabbed the monster before it reached us, potentially killing it before it could deliver another bite. No matter, though. The day is ours."
Sergei lights a torch and peers into the spider's nest; it's a web-lined shaft about 25 feet deep. The webbing, while sticky, allows the ranger to easily climb down and inspect the bottom of the nest for any wayward treasure. He finds the web-wrapped body of a dead bandit, and gives the corpse a thorough search. The bandit was carrying a short sword, a pouch with a handful of gold, and another of the silver stag amulets. He also finds lodged in his boot a rolled up parchment.
Climbing back out of the nest, Sergei shows the party the recovered items. The parchment is blank, save for a crude sketch of what appears to be a tree on a hill, with a red 'X' underneath it near the roots. The tree resembles a claw reaching for the sky. You don't know what to make of it, other than guessing that it might be a simple treasure map of some kind.
The spider slain and victory secured, the party makes camp for the night, preparing to return to Oleg's on the morrow.
The night is brutal. A wave of humid air heralds a terrific thunderstorm in the middle of the night, the winds and rain nearly collapsing the tent and sending the horses into a panic. When the sun finally rises, none of you have gotten a wink of sleep or rest, you're soaked to the bone, and at the end of your frayed nerves.
You make your slow plod back to Oleg's through fields of churned mud. Finally, just before supper, you return to the trading post. Oleg, Svetlana, and the various other colorful characters you've met so far are happy to see you're safe and well, and you all make the most of a hot meal and the promise of a dry bed in the evening.
A newcomer has arrived at the trading post: a half-orc man accompanied by an apparently tame black bear. Quiet and somewhat reserved, Oleg nonetheless mentions that the stranger was asking about you and the nature of the Swordlord's charter, especially concerning the topic of bandits. No doubt he'll wish to speak with you concerning your successful ambush of the bandits a little over two weeks ago, and the mysterious silver stag amulets.