As the investigation into the 2016 Trump campaign’s ties to Russia continues to gain steam, news outlets are reporting that special counsel Robert Mueller’s strategy has taken on a “follow the money” approach. A Dutch documentary released last month titled, “The Dubious Friends of Donald Trump” takes that approach a step further, and runs smack dab into the Russian mafia.

From Salon:

In examining Trump’s business partners, the filmmakers encounter the Russian mafia, including business and personal connections to oligarchs in Russia. The documentary takes a close look at Trump’s connections to the country, starting with his first trip to Russia in the 1980s.

The Zembla filmmakers interview some of Trump’s controversial friends, a former CIA agent, fraud investigators and attorneys, as well as U.S. Sen. Sheldon Whitehouse, a Democrat representing Rhode Island.

In the film, Malcolm Nance, a former U.S. intelligence officer, discusses Trump’s tendency to shy away from negative assessments of Russians: “If you’re a gambling addict and you owe someone a lot of money, you will never insult your bookie,” Nance says.

The film attempts to answer questions about Trump’s Russian connections: What do these relationships say about Trump and why does he deny them? And how compromising are these dubious business relationships for Trump?” Watch the film and judge for yourself.