Page 31 - Thousand Needles : 5

(67, 64) Step 1: Turn in "The Swarm Grows", accept the follow up.
(79, 77) Step 2: Turn in all the stuff you have to turn in here.
There's going to be a lot of accepting/turning in/reaccepting/returning in here. You can figure it out.
After all is said and done, you should have gotten Razzeric's Tweaking and The Rumormonger.
(69, 86) Step 3: The Swarm Grows, Parts of the Swarm.
Keep killing here until you get a Cracked Silithid Carapace to drop that starts the quest "Parts of the Swarm". Once you get the part and complete the Swarm Grows, return to Step 1 and turn in The Swarm Grows, then hearth to Crossroads and turn in "Parts of the Swarm", then go to Dustwallow Marsh and start circuit 2.
The invaders you need for The Swarm Grows are in the cave/hive thing, particuarly the big roudn room. Unfortunantly you aren't guranteed to get all 5 in one go, you may have to clear the whole cave out and wait for it to respawn.