Eye sight of the mind, works every time. There is no way he could have known without you, even to say it would have triggered something is not a given which gives you away. How close are you watching? Why are you looking so deep?
I will answer 1 question from your multiple fronts.
>Why are you looking so deep?
The grease that works it's way inside of the gears is blackened by the stain of the friction of Hate from the drive...