Smiling Assassins

Of notice or warning there's never a trace, For assassins come wearing a smile on their face, At the break of the dawn or the still of the night, Though you fear their arrival they're nowhere in sight, Well they they've carefully crafted their art and their style, And the only disguise that they wear is a smle, When they hold out their hand kinda knocks you off track, They continue to smile, plunge the knife in your back, Well the coroner ruled on an open-shut case, Of assassins who came with a smile on their face,