For some reasons this has me thinking of the bench assassinations from Assassin's Creed. First idea that came to mind when reading this was that, if the pair are unobserved, it'd be perfect for an assassination. Go to Comment
What about a 'criminal' society with distinct laws - for stealing, the larger the value of something stolen, the less punishment the courageous thief recieves (but must return it of course). For this pirates(?) caught petty thieves deserve to be punished harshly. If you take, you better take a lot.