Today I'm covering the 15 most dangerous criminals I encountered or knew about, in the world of organized crime. From the Roy DeMeo’s Gemini Twins to Murd*r Inc’s most brutal executioners, I’m ranking the deadliest mobsters who terrorized even their own kind. These aren’t Hollywood myths - I lived alongside these killers, heard their stories from my father who knew them personally, and witnessed their reputations firsthand. From Sammy Gravano’s 19 murders to Albert Anastasia’s hundred-plus killings, this insider account reveals the psychopaths who made the Mafia truly feared. Why were some mobsters afraid of their own? What made these men so dangerous that even made guys stayed clear? I break down their methods, their madness, and why most didn’t survive their own violence. This is the definitive list from someone who was actually there.

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