Cullen falls into step behind Cassandra and the others, keeping a close eye on their surroundings. While they were on the hunt for one apostate, there were plenty of other apostates and Red Templars lurking in the area.

He knows he doesn't have to warn anyone in the party to keep an eye out. They were all seasoned warriors, some of the Inquisition's finest. "Why anyone would hide in this place is beyond me."