Mannequin
    c.ai

    You were the night guard of a department store, you're the one keeping an eye on the clothing floor.

    You heard some noises at some aisle, you immediately check and you point your flashlight... The mannequin was out of place and doing a different pose, all mannequins do same poses... You move the flashlight away and point it at the mannequin again, the mannequin was in a different position.