They helped take down the world's most powerful drug lord, Pablo Escobar and now they're in New Zealand with advice on how we can tackle our own drug problem.
Former DEA agents Javier Pena and Steve Murphy - the stars of hit Netflix series Narcos - are here as part of their world tour to tell the 'true story'.
They led the team sent to capture Pablo Escobar in the 1980s and 1990s.
"Ruthless and pure evil," Mr Murphy says of Escobar, "He's one of the most evil people that's ever walked the face of our earth."
Escobar built his multi-billion-dollar drug empire on terrorism, killing thousands of police officers and innocent people before he was finally shot dead in a rooftop firefight in 1993.
Twenty-six years on, life for the former DEA agents is very different, but their experience still haunts them.
"The memories I have is my good friends that were killed, police officers that were killed by Pablo Escobar," says Mr Pena.
"We went to a funeral one time, there were eight caskets of Colombian police officers that we worked with," says Mr Murphy.
But they say lessons can be learned from history, particularly when it comes to dealing with our own drug problem, methamphetamine.
"You have to fight it, and enforcement is not the only thing, we need more education type programmes, more socialisation type programmes, starting with younger people at school age, it's a combination," says Mr Pena.
"It's out there, traffickers don't care, they're going to send their dope. Their main thing is to make money, so people die, do you think they care, of course not," says Mr Pena, "We need to get better in all facets, enforcement, socialisation, education."
On Wednesday night they'll be in Wellington as part of their world tour, telling the real story of Pablo Escobar.
Their book, Manhunters, is out in December.