"What the... Uriel? Uriel where are you?" A discombobulated Sam probed in the empty chamber he appeared, looking from side to side trying to figure out what just happened to him. One second he was goofing around with his friend, then the next one a flash of light appeared and he was in a completely different place.
Because of his trait, he didn't know whether the place was dark or not, but since there weren't any torches or light bulbs he, incorrectly, assumed it was. However, instead of making him feel vulnerable, he actually felt reassured by this.
After all, even though most cryptids were able to see in the dark, it still worked as a cover for cryptids and humans alike.