Ah. Just for the record, I know there was some question as to whether Aradin and his crew were attacked at Blighted Villaged or the temple of selune.
So here's what I found:
Go into your log and pull up the Nightsong quest. It reads:
A wizard in Baldur's Gate is offering a huge sum of money to anyone who brings him the Nightsong.
The Nightsong is in some kind of temple. It must be in the goblin camp.
One of the adventurers, the dwarf Brian, has a map leader to the Nightsong. However, he was killed by goblins AT THE TEMPLE.
So where did Aradin and his team get attacked by goblins? The Temple of Selune. Then they ran back to the grove. Halsin was captured at some point during their flight back.
