I do not remember whether I told you to keep the whole thing to yourselves, or just the information you received at the end.
What the NPC meant (not sure he said it, hehe) was to keep the information to yourselves, not necessarily to go alone. You are going to Belinara and have probably heard rumours of the dangers there (IC reason), but most of all I do not wish to close the quest, so feel free to ask for help or find companions for the next quest.
One thing though. I am running two groups parallel with each other. People in this group cannot go on the other quests, since you're in the wrong spot :p
If you have questions, post!
Harlas