Brendon took a deep breath, raising his wand. If this failed, they would be screwed. No one would think to come looking for them, and they would not know why they were there.
Slowly, carefully so he was word perfect, he cast each incantation, first setting off the obliviate, then the obscuro. It fell dark behind the shield, and Brendon breathed a sigh of relief, casting a lumos to clear it away.