We have to deal with a most clever and unscrupulous man, and we must use any means in our power ”otherwise he will slip through our fingers. 
We must be careful not to let the clever man slip through our fingers.
It is impossible for the man to slip through our fingers
Two men are putting up aluminum siding
Two young boys playing videogames
A woman and several children.
It always went smoothly when we camped.
Of course I'm not going.
A rider is sitting a table.