'McMillion$' finale: How McDonald's Monopoly game pieces were stolen; who was the snitch?

Spoiler alert: This recap includes spoilers from the finale of HBO's docuseries "McMillion$."

Let's ketchup.

In its final serving, HBO's docuseries 'McMillion$' revealed the identity of the mysterious informant who tipped off the FBI to the McDonald's Monopoly game scheme, how mastermind Jerome “Uncle Jerry” Jacobson took possession of the winning pieces and how he lives his life today.

This six-part series, (Mark Wahlberg is an executive producer), began Feb. 3 with the story of the rigged fast-food promotion, in which stolen tickets were sold to people who presented themselves to McDonald's as legitimate winners.

According to producers, Big Mac was swindled out of $24 million in cash and prizes. FBI Special Agent Doug Mathews, who adds plenty of personality to the series, paints a bleak picture for anyone who played the manipulated contest. He said that from 1989 to 2001, "there were almost no legitimate winners of the high-value game pieces."

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The FBI informant's identity uncovered

The finale kicks off focusing on the mysterious informant who tipped off the FBI in 2001. Lee Cassano, a friend of Gennaro "Jerry" Colombo, Jacobson's partner in the scheme, believes she is the whistleblower. Cassano, a recipient of a game piece worth $100,000, said she alerted the Internal Revenue Service to the scam with hopes that her $50,000 tax debt would be forgiven.

She said she was told by her accountant that her call ignited the FBI's investigation. However, Mathews laughed off that notion.

"Can you imagine the IRS giving something to the FBI that turns out to be a case, that we didn't already know about?" he said with a wide smile. "Holy (expletive), I hope we're better than that!"

Instead, Colombo's mother, identified as "Ma Colombo," appears to be the true informant, though Mathews isn't naming names. Ma's daughter-in-law Heather, married to Jerry Colombo's brother, Frank, says Ma was motivated to squeal by her desire to maintain custody of her grandson, Francesco, born to Jerry Colombo and his wife Robin. (In Episode 4, we learned that Colombo died as a result of injuries from a car wreck in which Robin was driving, and Robin was incarcerated after being wanted by authorities for grand theft auto.)

Jacobson's playbook unveiled

Episode 6 also broke down Jacobson's method of securing the winning game pieces. He eluded his escort from an accounting firm by entering the men's bathroom of an airport lounge.

Once in the stall, he used his escort's code (which he was said to have obtained merely by watching) to unlock the briefcase carrying the pieces. He then removed the holographic sticker that sealed the envelope containing the game pieces with a small knife. Next, he would replace the winning pieces with others. Jacobson had been mistakenly sent a sheet of the shiny, silver stickers to prevent tampering, which allowed him to seal the envelope once more.

To further sell his con, Assistant U.S. Attorney Mark Devereaux said that Jacobson donned a bulletproof vest to convey how seriously he took his mission.

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Jacobson receives his go to jail card

Jacobson got the most severe sentencing of those involved: roughly three years, according to the show and The Daily Beast. He was released in 2006 and currently lives outside Atlanta with his seventh wife, while making monthly restitution payments of $370.

Marvin Braun, Jacobson's stepbrother, no longer talks to him. But Braun, who pleaded guilty to one count of mail fraud, now considers Devereaux "a personal friend."

In contrast, Andrew "AJ" Glomb, who distributed the game pieces, told filmmakers his friend has no interest in rehashing his plagued past.

"He doesn't want to think about it, don't want to talk about it – nothing," Glomb said. "So when I teased him, I said, 'You got any tickets?' He didn't even respond."

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This article originally appeared on USA TODAY: 'McMillions' finale: Informant, how game pieces were stolen revealed