Hit man Dean or Sam - Dean Winchester/Sam Winchester

[wicciangirl]

Hi,

I am looking for a story that has Dean and Sam working for the Mafia. I think one of them is a hitman or enforcer, some of the other members of the Mafia are scared of them.
I am not sure if it was on archiveofourown.org, livejournal or fanfiction.net

Thanks in advance