You enter the cave and begin to search for any clues as to the plans of the Cult. Just a few yards in, a two person ambush of sorts is spotted and dispatched quickly. Following the southerly tunnel they were hiding near you discover a barracks full of cultists which through cunning (and a certain amount of luck) are also dispatched, but not before a few flee down a eastern passageway; the words "Go protect the mistress" are heard being shouted to them as they go.
After the battle, a quick check of another room just above the barracks reveals over turned crates and trash with roughly 16gp of coin and jewels strewn about as though they were dropped during a hasty exit. A sleeping cultist, surrouded by several empty wine bottles, is found here as well clearly passed out. Brehanna dispatches him with a dagger cut of the throat.
Now, about that eastern passage out of the barracks...