"I'm kinda worried because this is a big step up," he said at the time.
But the deal went through and Butler handed over a load of crystal meth to Marino.
The very next day, Butler and Wielsch were arrested and charged with federal and state counts of drug trafficking and conspiracy. Butler later pleaded guilty to felony charges that included drug distribution, extortion and illegal wiretapping.
Wielsch has admitted publicly to participating in the drug scam, but pled not guilty to similar charges.
Wielsch's lawyer told The San Francisco Gate in January that Wielsch was "not guilty of all the things they've charged him with."
Butler is scheduled to be sentenced on Sept. 11. He faces 10 to 14 years in prison.
Marino, meanwhile, plans to focus once again on acting. He's currently on set shooting the Investigation Discovery series, "Homicide Hunter."
Watch the full story on "20/20" tonight at a special time, 9 p.m. ET.