...possibly sunlight at the correct angle/bright enough to show anything like a hidden door Doug needs to use later, or any baddies who just happen to be hiding in ambush (shadows that noticeably shouldn't be there), as a secondary effect? "I can see all obstacles in my way."
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"You know how parents tell you everything's going to fine, but you know they're lying to make you feel better? Everything's going to be fine." - The Doctor
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"You know how parents tell you everything's going to fine, but you know they're lying to make you feel better? Everything's going to be fine." - The Doctor