under cover of night

Exploration Stage: Abandoned Factory
From: Vera
Description: I will absolutely prove that I didn't steal the research! The thief's footprints lead to an abandoned factory with lots of cameras inside. So why hasn't anyone seen the culprit? The footprints disappear at the end of the hallway. We should find out how the thief avoided the cameras!
Completed: How did you manage to find such a cloak in a dark corner of the room? I couldn't see it at all, it was so out of sync with the wall! The killer must have used it to escape the camera's view. Interesting... look at this. The wall where the cloak was protrudes a little... there's a secret passage!